1,815 Mechanics Images: LOC's Public Domain Archive Public Domain Search

Mare Island Naval Shipyard, Mechanics Shop, Waterfront Avenue, west si...

Significance: Building 271 is a contributing element of the Mare Island Historic District. Building 271 is highly significant as the earliest of the "curtain-wall" industrial buildings at Mare Island, a distin... More

Rational Recreations - Harry Houdini collection

Picryl description: Public domain philosophy book, free to use, no copyright restrictions image.

Rational Recreations - Harry Houdini collection

Picryl description: Public domain philosophy book, free to use, no copyright restrictions image.

Mechanics' Bank, 22 South Third Street, Philadelphia, Philadelphia Cou...

Significance: This small, early 19th century Greek Revival building is one of the last Philadelphia buildings designed by William Strickland. The bank held the property until 1904, and the church bought it in 1... More

Philosophiae Naturalis Principia Mathematica.

Also available in digital form on the Library of Congress Web site. Signatures: [A]-Z⁴, (H₂ lettered G₂), Aa-Zz⁴, ***⁴, Aaa-Ooo⁴. The second and third books were apparently printed by different printers as indi... More

[Diagram showing the mechanics of a parallel-flow turbine]

Illus. in: A manual of the steam engine and other prime movers / by William John Macquorn Rankine. 3d ed., rev. London : C. Griffin and Company, 1866. Published in: The tradition of technology : Landmarks of W... More

Instruction on Curtis motors for apprentice seamen as aviation mechani...

Public domain image of a group of people, ceremony, event, free to use, no copyright restrictions - Picryl description

Education and School Children - Stuyvesant High School, Laboratory of ...

Title and other information transcribed from caption card and item. George Grantham Bain Collection (Library of Congress). Caption card tracings: School Classrooms; Geogr.

AIR MAIL. INAUGURATION OF SERVICE, POLO FIELD. MECHANICS

Picryl description: Public domain historical photo of Washington DC during the First World War, free to use, no copyright restrictions image.

Heads of the various divisions of the striking shopmen who held a long...

A black and white photo of a group of men in suits. Public domain portrait photograph, free to use, no copyright restrictions image - Picryl description

Dusting plane hedge-hopping after spraying swath on beanfield. These p...

Public domain photograph related to Circus, free to use, no copyright restrictions image - Picryl description

Citation winners. Daniel W. Mallett, certificate winner, an employee o...

Picryl description: Public domain historical photo of Washington DC during the First World War, free to use, no copyright restrictions image.

De Land pool. Aircraft construction class. Daytona Beach, Florida high...

Public domain photograph of aircraft engine, free to use, no copyright restrictions image - Picryl description

Production. A-20 attack bombers. Mechanics fuel a new A-20 attack bomb...

Picryl description: Public domain image of a bomber aircraft, military aviation, air forces, free to use, no copyright restrictions.

Fort Knox. Maintenance of mechanized equipment. Mechanics at Fort Knox...

Picryl description: Public domain image of military vehicle, automobile, tractor truck, free to use, no copyright restrictions.

High school Victory Corps. In aeronautics class at Washington High Sch...

Public domain photograph of factory building, free to use, no copyright restrictions image - Picryl description

Bus trip from Knoxville, Tennessee, to Washington, D.C. Mechanics at w...

Picryl description: Public domain image of workers, labor, 1940s, economic conditions, free to use, no copyright restrictions.

Daytona Beach, Florida. Bethune-Cookman College. NYA (National Youth A...

Picryl description: Public domain image of a factory, plant, manufacture, assembly line, industrial facility, early 20th-century industrial architecture, free to use, no copyright restrictions.

Farmers' & Mechanics' Bank, 427 Chestnut Street, Philadelphia, Philade...

Significance: The Farmers' & Merchants' Bank, at that time the largest in the city, erected the first of the bank row structures in 1854. The building has recently been the home of the Philadelphia Maritime Mus... More

Creatore's Band on steps of Mechanics Building, Huntington Ave, Boston...

H37360 U.S. Copyright Office Copyright deposit; E. Chickering Co.; October 27, 1903. On front: "Copyright by E. Chickering & Co., 1903, reproduction forbidden".

American Order of United Mechanics

A2227 U.S. Copyright Office. This record contains unverified data from PGA shelflist card. Associated name on shelflist card: Strobridge.

Our country ..... home industry. [Cut] Manufacturers and mechanics. Yo...

Available also through the Library of Congress web site in two forms: as facsimile page images and as full text in SGML. Printed Ephemera Collection; Portfolio 117, Folder 13.

U.S. Engineers - Foremost Skilled mechanics, technical specialists.

Poster showing three men in helmets, holding a surveyor's transit, a drafting compass, and a pistol.

Dusting plane hedge-hopping after spraying swath on beanfield. These p...

Public domain photograph related to Circus, free to use, no copyright restrictions image - Picryl description

Production. Aircraft. Aircraft mechanics check the installation of a 5...

Picryl description: Public domain image of an aircraft, assembly line, industrial facility, 1930s aviation, free to use, no copyright restrictions.

U.S. Naval Academy, Annapolis, Maryland. Instruction in steam propulsi...

Picryl description: Public domain photograph of a car, 1930s, free to use, no copyright restrictions.

U.S. Naval Academy, Annapolis, Maryland. Instruction in steam propulsi...

Picryl description: Public domain photograph of workers, war production, aircraft, airfield, the 1930s -1940s, free to use, no copyright restrictions.

Pittsburgh, Pennsylvania (vicinity). Montour no. 4 mine of the Pittsbu...

Picryl description: Public domain image of industrial or agricultural worker, 1930s, 20th-century, free to use, no copyright restrictions. show less

Bus trip from Knoxville, Tennessee, to Washington, D.C. Mechanics at w...

Picryl description: Public domain image of an industrial building, factory, workshop, workers, 19th-20th century, free to use, no copyright restrictions.

Mare Island Naval Shipyard, Mechanics Shop, Waterfront Avenue, west si...

Significance: Building 271 is a contributing element of the Mare Island Historic District. Building 271 is highly significant as the earliest of the "curtain-wall" industrial buildings at Mare Island, a distin... More

Mare Island Naval Shipyard, Mechanics Shop, Waterfront Avenue, west si...

Significance: Building 271 is a contributing element of the Mare Island Historic District. Building 271 is highly significant as the earliest of the "curtain-wall" industrial buildings at Mare Island, a distin... More

Farmers' & Mechanics' Bank, 427 Chestnut Street, Philadelphia, Philade...

Significance: The Farmers' & Merchants' Bank, at that time the largest in the city, erected the first of the bank row structures in 1854. The building has recently been the home of the Philadelphia Maritime Mus... More

Miners & Mechanics Bank Building, 13 North Main Street, Carbondale, La...

Significance: This design includes many different orders of Classic Revival Architecture. All these elements combine to present a strong design, suitable for the image a financial institution would want to exhi... More

Miners & Mechanics Bank Building, 13 North Main Street, Carbondale, La...

Significance: This design includes many different orders of Classic Revival Architecture. All these elements combine to present a strong design, suitable for the image a financial institution would want to exhi... More

Ruins of San Francisco from the site of the Mechanics' Pavilion

H80587 U.S. Copyright Office Copyright deposit; Smith Bros.; July 16, 1906; DLC/PP-1906:43052. Copyright claimant's address: Oakland, Cal.

Rational Recreations - Harry Houdini collection

Picryl description: Public domain philosophy book, free to use, no copyright restrictions image.

Mechanics Savings Bank Building, 80 Pearl Street, Hartford, Hartford C...

Significance: The Mechanics Savings Bank building is a fine example of the Neo Classical Revival style of architecture. Its colossal granite fluted Doric columns in antis and the entablature they support with ... More

Philosophiae Naturalis Principia Mathematica.

Also available in digital form on the Library of Congress Web site. Signatures: [A]-Z⁴, (H₂ lettered G₂), Aa-Zz⁴, ***⁴, Aaa-Ooo⁴. The second and third books were apparently printed by different printers as indi... More

To the mechanics and working-men of the fifth ward, and those friendly...

Relates to Robert Dale Owen and Frances Wright. Available also through the Library of Congress web site in two forms: as facsimile page images and as full text in SGML. Printed Ephemera Collection; Portfolio 11... More

Second exhibition of the Metropolitan mechanics' institute, for the pr...

Available also through the Library of Congress web site in two forms: as facsimile page images and as full text in SGML. 2 duplicate copies Printed Ephemera Collection; Portfolio 202, Folder 2. Copy scanned: 1

Astor Cup Race -- Stutz mechanics & drivers (Anderson)

Public domain historical photo, free to use, no copyright restrictions image - Picryl description

Ḳav̂aid ut-tạhavvülât fî ḥarekât iz-z̲errât

Master Microform held by: DLC Inscriptions on front and back covers: [tughra] el-Müstenid bi-tevfikât ir-Rabbâniye, Melik üd-Devlet-il-aliyet-il-Osmaniye, es-Sultan ibn us-Sultan is-Sultan el-Gazi Abdülham... More

Opera geometrica - Rare book, public domain, Library of Congress scan

Paging irregular: no. 79-80 of "De dimensione parabolae" omitted; p. 151 of "Appendix" numbered 115. Half-title. The first part has special t.p.: De sphæra et solidis sphæralibus libri dvo, in quibus Archimedis... More

Opera geometrica - Rare book, public domain, Library of Congress scan

Paging irregular: no. 79-80 of "De dimensione parabolae" omitted; p. 151 of "Appendix" numbered 115. Half-title. The first part has special t.p.: De sphæra et solidis sphæralibus libri dvo, in quibus Archimedis... More

Ḳav̂aid ut-tạhavvülât fî ḥarekât iz-z̲errât

Master Microform held by: DLC Inscriptions on front and back covers: [tughra] el-Müstenid bi-tevfikât ir-Rabbâniye, Melik üd-Devlet-il-aliyet-il-Osmaniye, es-Sultan ibn us-Sultan is-Sultan el-Gazi Abdülham... More

La noua scientia de Nicolo Tartaglia, con una gionta al terzo libro ..

Illustrated t.-p. First published in Venice, 1537. LAC ecr 2018-11-14 update (1 card)

Gli artifitiosi et curiosi moti spiritali di Herrone

Date of publication transposed: precedes publisher's name on t.p. Signatures: [par.]⁴ A-N⁴ [cross]². Title within architectural woodcut border. "Quattro theoremi aggiunti a gli artifitiosi spirti de gli element... More

Opera geometrica - Rare book, public domain, Library of Congress scan

Paging irregular: no. 79-80 of "De dimensione parabolae" omitted; p. 151 of "Appendix" numbered 115. Half-title. The first part has special t.p.: De sphæra et solidis sphæralibus libri dvo, in quibus Archimedis... More

Ḳav̂aid ut-tạhavvülât fî ḥarekât iz-z̲errât

Master Microform held by: DLC Inscriptions on front and back covers: [tughra] el-Müstenid bi-tevfikât ir-Rabbâniye, Melik üd-Devlet-il-aliyet-il-Osmaniye, es-Sultan ibn us-Sultan is-Sultan el-Gazi Abdülham... More

Gli artifitiosi et curiosi moti spiritali di Herrone

Date of publication transposed: precedes publisher's name on t.p. Signatures: [par.]⁴ A-N⁴ [cross]². Title within architectural woodcut border. "Quattro theoremi aggiunti a gli artifitiosi spirti de gli element... More

La noua scientia de Nicolo Tartaglia, con una gionta al terzo libro ..

Illustrated t.-p. First published in Venice, 1537. LAC ecr 2018-11-14 update (1 card)

Gli artifitiosi et curiosi moti spiritali di Herrone

Date of publication transposed: precedes publisher's name on t.p. Signatures: [par.]⁴ A-N⁴ [cross]². Title within architectural woodcut border. "Quattro theoremi aggiunti a gli artifitiosi spirti de gli element... More

Opera geometrica - Rare book, public domain, Library of Congress scan

Paging irregular: no. 79-80 of "De dimensione parabolae" omitted; p. 151 of "Appendix" numbered 115. Half-title. The first part has special t.p.: De sphæra et solidis sphæralibus libri dvo, in quibus Archimedis... More

Gli artifitiosi et curiosi moti spiritali di Herrone

Date of publication transposed: precedes publisher's name on t.p. Signatures: [par.]⁴ A-N⁴ [cross]². Title within architectural woodcut border. "Quattro theoremi aggiunti a gli artifitiosi spirti de gli element... More

Ḳav̂aid ut-tạhavvülât fî ḥarekât iz-z̲errât

Master Microform held by: DLC Inscriptions on front and back covers: [tughra] el-Müstenid bi-tevfikât ir-Rabbâniye, Melik üd-Devlet-il-aliyet-il-Osmaniye, es-Sultan ibn us-Sultan is-Sultan el-Gazi Abdülham... More

Gli artifitiosi et curiosi moti spiritali di Herrone

Date of publication transposed: precedes publisher's name on t.p. Signatures: [par.]⁴ A-N⁴ [cross]². Title within architectural woodcut border. "Quattro theoremi aggiunti a gli artifitiosi spirti de gli element... More

Ḳav̂aid ut-tạhavvülât fî ḥarekât iz-z̲errât

Master Microform held by: DLC Inscriptions on front and back covers: [tughra] el-Müstenid bi-tevfikât ir-Rabbâniye, Melik üd-Devlet-il-aliyet-il-Osmaniye, es-Sultan ibn us-Sultan is-Sultan el-Gazi Abdülham... More

Opera geometrica - Rare book, public domain, Library of Congress scan

Paging irregular: no. 79-80 of "De dimensione parabolae" omitted; p. 151 of "Appendix" numbered 115. Half-title. The first part has special t.p.: De sphæra et solidis sphæralibus libri dvo, in quibus Archimedis... More

Ḳav̂aid ut-tạhavvülât fî ḥarekât iz-z̲errât

Master Microform held by: DLC Inscriptions on front and back covers: [tughra] el-Müstenid bi-tevfikât ir-Rabbâniye, Melik üd-Devlet-il-aliyet-il-Osmaniye, es-Sultan ibn us-Sultan is-Sultan el-Gazi Abdülham... More

Ḳav̂aid ut-tạhavvülât fî ḥarekât iz-z̲errât

Master Microform held by: DLC Inscriptions on front and back covers: [tughra] el-Müstenid bi-tevfikât ir-Rabbâniye, Melik üd-Devlet-il-aliyet-il-Osmaniye, es-Sultan ibn us-Sultan is-Sultan el-Gazi Abdülham... More

Opera geometrica - Rare book, public domain, Library of Congress scan

Paging irregular: no. 79-80 of "De dimensione parabolae" omitted; p. 151 of "Appendix" numbered 115. Half-title. The first part has special t.p.: De sphæra et solidis sphæralibus libri dvo, in quibus Archimedis... More

Opera geometrica - Rare book, public domain, Library of Congress scan

Paging irregular: no. 79-80 of "De dimensione parabolae" omitted; p. 151 of "Appendix" numbered 115. Half-title. The first part has special t.p.: De sphæra et solidis sphæralibus libri dvo, in quibus Archimedis... More

Gli artifitiosi et curiosi moti spiritali di Herrone

Date of publication transposed: precedes publisher's name on t.p. Signatures: [par.]⁴ A-N⁴ [cross]². Title within architectural woodcut border. "Quattro theoremi aggiunti a gli artifitiosi spirti de gli element... More

Opera geometrica - Rare book, public domain, Library of Congress scan

Paging irregular: no. 79-80 of "De dimensione parabolae" omitted; p. 151 of "Appendix" numbered 115. Half-title. The first part has special t.p.: De sphæra et solidis sphæralibus libri dvo, in quibus Archimedis... More

Opera geometrica - Rare book, public domain, Library of Congress scan

Paging irregular: no. 79-80 of "De dimensione parabolae" omitted; p. 151 of "Appendix" numbered 115. Half-title. The first part has special t.p.: De sphæra et solidis sphæralibus libri dvo, in quibus Archimedis... More

Opera geometrica - Rare book, public domain, Library of Congress scan

Paging irregular: no. 79-80 of "De dimensione parabolae" omitted; p. 151 of "Appendix" numbered 115. Half-title. The first part has special t.p.: De sphæra et solidis sphæralibus libri dvo, in quibus Archimedis... More

Opera geometrica - Rare book, public domain, Library of Congress scan

Paging irregular: no. 79-80 of "De dimensione parabolae" omitted; p. 151 of "Appendix" numbered 115. Half-title. The first part has special t.p.: De sphæra et solidis sphæralibus libri dvo, in quibus Archimedis... More

Opera geometrica - Rare book, public domain, Library of Congress scan

Paging irregular: no. 79-80 of "De dimensione parabolae" omitted; p. 151 of "Appendix" numbered 115. Half-title. The first part has special t.p.: De sphæra et solidis sphæralibus libri dvo, in quibus Archimedis... More

Opera geometrica - Rare book, public domain, Library of Congress scan

Paging irregular: no. 79-80 of "De dimensione parabolae" omitted; p. 151 of "Appendix" numbered 115. Half-title. The first part has special t.p.: De sphæra et solidis sphæralibus libri dvo, in quibus Archimedis... More

Opera geometrica - Rare book, public domain, Library of Congress scan

Paging irregular: no. 79-80 of "De dimensione parabolae" omitted; p. 151 of "Appendix" numbered 115. Half-title. The first part has special t.p.: De sphæra et solidis sphæralibus libri dvo, in quibus Archimedis... More

Opera geometrica - Rare book, public domain, Library of Congress scan

Paging irregular: no. 79-80 of "De dimensione parabolae" omitted; p. 151 of "Appendix" numbered 115. Half-title. The first part has special t.p.: De sphæra et solidis sphæralibus libri dvo, in quibus Archimedis... More

Opera geometrica - Rare book, public domain, Library of Congress scan

Paging irregular: no. 79-80 of "De dimensione parabolae" omitted; p. 151 of "Appendix" numbered 115. Half-title. The first part has special t.p.: De sphæra et solidis sphæralibus libri dvo, in quibus Archimedis... More

Opera geometrica - Rare book, public domain, Library of Congress scan

Paging irregular: no. 79-80 of "De dimensione parabolae" omitted; p. 151 of "Appendix" numbered 115. Half-title. The first part has special t.p.: De sphæra et solidis sphæralibus libri dvo, in quibus Archimedis... More

Opera geometrica - Rare book, public domain, Library of Congress scan

Paging irregular: no. 79-80 of "De dimensione parabolae" omitted; p. 151 of "Appendix" numbered 115. Half-title. The first part has special t.p.: De sphæra et solidis sphæralibus libri dvo, in quibus Archimedis... More

Opera geometrica - Rare book, public domain, Library of Congress scan

Paging irregular: no. 79-80 of "De dimensione parabolae" omitted; p. 151 of "Appendix" numbered 115. Half-title. The first part has special t.p.: De sphæra et solidis sphæralibus libri dvo, in quibus Archimedis... More

Opera geometrica - Rare book, public domain, Library of Congress scan

Paging irregular: no. 79-80 of "De dimensione parabolae" omitted; p. 151 of "Appendix" numbered 115. Half-title. The first part has special t.p.: De sphæra et solidis sphæralibus libri dvo, in quibus Archimedis... More

Opera geometrica - Rare book, public domain, Library of Congress scan

Paging irregular: no. 79-80 of "De dimensione parabolae" omitted; p. 151 of "Appendix" numbered 115. Half-title. The first part has special t.p.: De sphæra et solidis sphæralibus libri dvo, in quibus Archimedis... More

Opera geometrica - Rare book, public domain, Library of Congress scan

Paging irregular: no. 79-80 of "De dimensione parabolae" omitted; p. 151 of "Appendix" numbered 115. Half-title. The first part has special t.p.: De sphæra et solidis sphæralibus libri dvo, in quibus Archimedis... More

Opera geometrica - Rare book, public domain, Library of Congress scan

Paging irregular: no. 79-80 of "De dimensione parabolae" omitted; p. 151 of "Appendix" numbered 115. Half-title. The first part has special t.p.: De sphæra et solidis sphæralibus libri dvo, in quibus Archimedis... More

Opera geometrica - Rare book, public domain, Library of Congress scan

Paging irregular: no. 79-80 of "De dimensione parabolae" omitted; p. 151 of "Appendix" numbered 115. Half-title. The first part has special t.p.: De sphæra et solidis sphæralibus libri dvo, in quibus Archimedis... More

Opera geometrica - Rare book, public domain, Library of Congress scan

Paging irregular: no. 79-80 of "De dimensione parabolae" omitted; p. 151 of "Appendix" numbered 115. Half-title. The first part has special t.p.: De sphæra et solidis sphæralibus libri dvo, in quibus Archimedis... More

Opera geometrica - Rare book, public domain, Library of Congress scan

Paging irregular: no. 79-80 of "De dimensione parabolae" omitted; p. 151 of "Appendix" numbered 115. Half-title. The first part has special t.p.: De sphæra et solidis sphæralibus libri dvo, in quibus Archimedis... More

Opera geometrica - Rare book, public domain, Library of Congress scan

Paging irregular: no. 79-80 of "De dimensione parabolae" omitted; p. 151 of "Appendix" numbered 115. Half-title. The first part has special t.p.: De sphæra et solidis sphæralibus libri dvo, in quibus Archimedis... More

Opera geometrica - Rare book, public domain, Library of Congress scan

Paging irregular: no. 79-80 of "De dimensione parabolae" omitted; p. 151 of "Appendix" numbered 115. Half-title. The first part has special t.p.: De sphæra et solidis sphæralibus libri dvo, in quibus Archimedis... More

Opera geometrica - Rare book, public domain, Library of Congress scan

Paging irregular: no. 79-80 of "De dimensione parabolae" omitted; p. 151 of "Appendix" numbered 115. Half-title. The first part has special t.p.: De sphæra et solidis sphæralibus libri dvo, in quibus Archimedis... More

Opera geometrica - Rare book, public domain, Library of Congress scan

Paging irregular: no. 79-80 of "De dimensione parabolae" omitted; p. 151 of "Appendix" numbered 115. Half-title. The first part has special t.p.: De sphæra et solidis sphæralibus libri dvo, in quibus Archimedis... More

Opera geometrica - Rare book, public domain, Library of Congress scan

Paging irregular: no. 79-80 of "De dimensione parabolae" omitted; p. 151 of "Appendix" numbered 115. Half-title. The first part has special t.p.: De sphæra et solidis sphæralibus libri dvo, in quibus Archimedis... More

Opera geometrica - Rare book, public domain, Library of Congress scan

Paging irregular: no. 79-80 of "De dimensione parabolae" omitted; p. 151 of "Appendix" numbered 115. Half-title. The first part has special t.p.: De sphæra et solidis sphæralibus libri dvo, in quibus Archimedis... More

Opera geometrica - Rare book, public domain, Library of Congress scan

Paging irregular: no. 79-80 of "De dimensione parabolae" omitted; p. 151 of "Appendix" numbered 115. Half-title. The first part has special t.p.: De sphæra et solidis sphæralibus libri dvo, in quibus Archimedis... More

Opera geometrica - Rare book, public domain, Library of Congress scan

Paging irregular: no. 79-80 of "De dimensione parabolae" omitted; p. 151 of "Appendix" numbered 115. Half-title. The first part has special t.p.: De sphæra et solidis sphæralibus libri dvo, in quibus Archimedis... More

Opera geometrica - Rare book, public domain, Library of Congress scan

Paging irregular: no. 79-80 of "De dimensione parabolae" omitted; p. 151 of "Appendix" numbered 115. Half-title. The first part has special t.p.: De sphæra et solidis sphæralibus libri dvo, in quibus Archimedis... More

Opera geometrica - Rare book, public domain, Library of Congress scan

Paging irregular: no. 79-80 of "De dimensione parabolae" omitted; p. 151 of "Appendix" numbered 115. Half-title. The first part has special t.p.: De sphæra et solidis sphæralibus libri dvo, in quibus Archimedis... More

Opera geometrica - Rare book, public domain, Library of Congress scan

Paging irregular: no. 79-80 of "De dimensione parabolae" omitted; p. 151 of "Appendix" numbered 115. Half-title. The first part has special t.p.: De sphæra et solidis sphæralibus libri dvo, in quibus Archimedis... More

Opera geometrica - Rare book, public domain, Library of Congress scan

Paging irregular: no. 79-80 of "De dimensione parabolae" omitted; p. 151 of "Appendix" numbered 115. Half-title. The first part has special t.p.: De sphæra et solidis sphæralibus libri dvo, in quibus Archimedis... More

Mechanics and workingmen - Read and reflect! Republican tariff plank ....

Available also through the Library of Congress web site in two forms: as facsimile page images and as full text in SGML. Printed Ephemera Collection; Portfolio 238, Folder 28.

Mechanics and workingmen - Read and reflect! Republican tariff plank ....

Available also through the Library of Congress web site in two forms: as facsimile page images and as full text in SGML. Printed Ephemera Collection; Portfolio 238, Folder 28.