Princess Mary going to be married

Photograph shows the wedding coach of Princess Mary, Princess Royal and Countess of Harewood (1897-1965), the only daughter of King George V and Queen Mary. (Source: Flickr Commons project, 2011)
Title and date from data provided by the Bain News Service on the negative.
Forms part of: George Grantham Bain Collection (Library of Congress).
General information about the George Grantham Bain Collection is available at http://hdl.loc.gov/loc.pnp/pp.ggbain