Mayflower Hotel. Construction of air conditioning on roof of Mayflower...
The Theodor Horydczak Collection documents the architecture and social life of the Washington DC metropolitan area in the 1920s, 1930s, and 1940s.
Mayflower Hotel. Construction of air conditioning on roof of Mayflower...
Picryl description: Public domain photograph of a historic hotel building, free to use, no copyright restrictions.
Harrington Hotel. Air conditioning machinery at Harrington Hotel
Item title devised. Subject card annotation: Harrington air conditioning for Hudson Air Conditioning Company.
Electric Institute of Washington. Room temperature reduced 10 degrees ...
Public domain photograph of commerce and advertising, 1920s-1930s America, free to use, no copyright restrictions image - Picryl description
Electric Institute of Washington. Room temperature reduced 10 degrees ...
The Theodor Horydczak Collection documents the architecture and social life of the Washington DC metropolitan area in the 1920s, 1930s, and 1940s.
Mayflower Hotel. Construction of air conditioning on roof of Mayflower...
Picryl description: Public domain image of a damaged, burned, or destroyed building, natural disaster, war destruction, ruins, 19th-century architecture, free to use, no copyright restrictions.
Electric Institute of Washington, Potomac Electric Power Co. building....
Picryl description: Public domain image of a department store, commerce, shopping, main street, city downtown, early 20th-century, free to use, no copyright restrictions.
Electric Institute of Washington, Potomac Electric Power Co. Air condi...
Public domain photograph of commerce and advertising, 1920s-1930s America, free to use, no copyright restrictions image - Picryl description
Mayflower Hotel. Construction of air conditioning on roof of Mayflower...
Picryl description: Public domain image of a damaged, burned, or destroyed building, natural disaster, war destruction, ruins, 19th-century architecture, free to use, no copyright restrictions.
Mayflower Hotel. Construction of air conditioning on roof of Mayflower...
Public domain photograph of midcentury American architecture, free to use, no copyright restrictions image - Picryl description
Potomac Electric Power Co. air conditioning and lighting. Marshall apa...
Picryl description: Public domain image of a bureau, office furniture, desk, chair, free to use, no copyright restrictions.
Mayflower Hotel. Construction of air conditioning on roof of Mayflower...
Public domain photograph of midcentury American architecture, free to use, no copyright restrictions image - Picryl description
Electric Institute of Washington. Room temperature reduced 10 degrees ...
Public domain photograph of commerce and advertising, 1920s-1930s America, free to use, no copyright restrictions image - Picryl description
Electric Institute of Washington, Potomac Electric Power Co. Air condi...
Public domain photograph of commerce and advertising, 1920s-1930s America, free to use, no copyright restrictions image - Picryl description
Leon Chatelain Jr., architect. Brookland dial center air conditioner b...
Public domain photograph of midcentury American office, workers, free to use, no copyright restrictions image - Picryl description
Mayflower Hotel. Construction of air conditioning on roof of Mayflower...
Picryl description: Public domain image of a construction site, wooden frame, timber, free to use, no copyright restrictions.
Mayflower Hotel. Construction of air conditioning on roof of Mayflower...
The Theodor Horydczak Collection documents the architecture and social life of the Washington DC metropolitan area in the 1920s, 1930s, and 1940s.
Mayflower Hotel. Construction of air conditioning on roof of Mayflower...
Public domain photograph of midcentury American architecture, free to use, no copyright restrictions image - Picryl description
Mayflower Hotel. Construction of air conditioning on roof of Mayflower...
Public domain photograph of midcentury American architecture, free to use, no copyright restrictions image - Picryl description
Harrington Hotel. Air conditioning machinery at Harrington Hotel
Picryl description: Public domain photograph of a historic hotel building, free to use, no copyright restrictions.
Model house, Orange, New Jersey. View to Carrier air conditioner
Public domain photograph of 1940s-1950s America, free to use, no copyright restrictions image - Picryl description
Mayflower Hotel. Construction of air conditioning on roof of Mayflower...
Picryl description: Public domain image of a construction site, wooden frame, timber, free to use, no copyright restrictions.
Electric Institute of Washington, Potomac Electric Power Co. Air condi...
Picryl description: Public domain image of a bureau, office furniture, desk, chair, free to use, no copyright restrictions.
Electric Institute of Washington. Sears Roebuck window
Public domain photograph of commerce and advertising, 1920s-1930s America, free to use, no copyright restrictions image - Picryl description
Mayflower Hotel. Construction of air conditioning on roof of Mayflower...
Public domain photograph of a hotel building, free to use, no copyright restrictions image - Picryl description
Electric Institute of Washington. Window display at night I
Public domain photograph of commerce and advertising, 1920s-1930s America, free to use, no copyright restrictions image - Picryl description
Electric Institute of Washington. Room temperature reduced 10 degrees ...
The Theodor Horydczak Collection documents the architecture and social life of the Washington DC metropolitan area in the 1920s, 1930s, and 1940s.
Electric Institute of Washington. Room temperature reduced 10 degrees ...
Public domain photograph of commerce and advertising, 1920s-1930s America, free to use, no copyright restrictions image - Picryl description
Mayflower Hotel. Construction of air conditioning on roof of Mayflower...
Picryl description: Public domain image of a construction site, wooden frame, timber, free to use, no copyright restrictions.
Mayflower Hotel. Construction of air conditioning on roof of Mayflower...
Picryl description: Public domain image of a historical landmark building, courtyard, 17th, 18th, 19th-century architecture, free to use, no copyright restrictions.
Mayflower Hotel. Construction of air conditioning on roof of Mayflower...
The Theodor Horydczak Collection documents the architecture and social life of the Washington DC metropolitan area in the 1920s, 1930s, and 1940s.
Mayflower Hotel. Construction of air conditioning on roof of Mayflower...
Picryl description: Public domain image of a construction site, wooden frame, timber, free to use, no copyright restrictions.
Electric Institute of Washington, Potomac Electric Power Co. building....
Picryl description: Public domain image of a department store, commerce, shopping, main street, city downtown, early 20th-century, free to use, no copyright restrictions.
Mayflower Hotel. Construction of air conditioning on roof of Mayflower...
The Theodor Horydczak Collection documents the architecture and social life of the Washington DC metropolitan area in the 1920s, 1930s, and 1940s.
Mayflower Hotel. Construction of air conditioning on roof of Mayflower...
Public domain photograph of 1940s-1950s America, free to use, no copyright restrictions image - Picryl description
Electric Institute of Washington, Potomac Electric Power Co. Air condi...
Picryl description: Public domain image of a department store, commercial building, downtown, shopping center, 19th-20th century, free to use, no copyright restrictions.
Electric Institute of Washington, Potomac Electric Power Co. Air condi...
Public domain photograph of commerce and advertising, 1920s-1930s America, free to use, no copyright restrictions image - Picryl description
Mayflower Hotel. Construction of air conditioning on roof of Mayflower...
The Theodor Horydczak Collection documents the architecture and social life of the Washington DC metropolitan area in the 1920s, 1930s, and 1940s.
Electric Institute of Washington, Potomac Electric Power Co. Air condi...
The Theodor Horydczak Collection documents the architecture and social life of the Washington DC metropolitan area in the 1920s, 1930s, and 1940s.
Electric Institute of Washington, Potomac Electric Power Co. Air condi...
The Theodor Horydczak Collection documents the architecture and social life of the Washington DC metropolitan area in the 1920s, 1930s, and 1940s.
Electric Institute of Washington. Window display at night I
The Theodor Horydczak Collection documents the architecture and social life of the Washington DC metropolitan area in the 1920s, 1930s, and 1940s.
Mayflower Hotel. Construction of air conditioning on roof of Mayflower...
The Theodor Horydczak Collection documents the architecture and social life of the Washington DC metropolitan area in the 1920s, 1930s, and 1940s.
Electric Institute of Washington, Potomac Electric Power Co. Air condi...
Picryl description: Public domain image of a bureau, office furniture, desk, chair, free to use, no copyright restrictions.
Mayflower Hotel. Construction of air conditioning on roof of Mayflower...
The Theodor Horydczak Collection documents the architecture and social life of the Washington DC metropolitan area in the 1920s, 1930s, and 1940s.
Mayflower Hotel. Construction of air conditioning on roof of Mayflower...
Picryl description: Public domain image of a historical landmark building, courtyard, 17th, 18th, 19th-century architecture, free to use, no copyright restrictions.
Potomac Electric Power Co. air conditioning and lighting. Marshall apa...
Picryl description: Public domain image of a bureau, office furniture, desk, chair, free to use, no copyright restrictions.
Electric Institute of Washington, Potomac Electric Power Co. Air condi...
Picryl description: Public domain image of a department store, commercial building, downtown, shopping center, 19th-20th century, free to use, no copyright restrictions.
Electric Institute of Washington. Sears Roebuck window
The Theodor Horydczak Collection documents the architecture and social life of the Washington DC metropolitan area in the 1920s, 1930s, and 1940s.
Electric Institute of Washington. Room temperature reduced 10 degrees ...
The Theodor Horydczak Collection documents the architecture and social life of the Washington DC metropolitan area in the 1920s, 1930s, and 1940s.
Electric Institute of Washington, Potomac Electric Power Co. Air condi...
The Theodor Horydczak Collection documents the architecture and social life of the Washington DC metropolitan area in the 1920s, 1930s, and 1940s.
Mayflower Hotel. Construction of air conditioning on roof of Mayflower...
Picryl description: Public domain image of a historical landmark building, courtyard, 17th, 18th, 19th-century architecture, free to use, no copyright restrictions.