Over the river and through the woods in 1920. "Oldsmobile Sales Co., Rock Creek Park." National Photo Company Collection glass negative. View full size.

December 1928. "Washington Sanitarium. Takoma Park, Maryland. Office of Inpatient Nurses." View full size. National Photo Company glass negative.

"Young man in dormitory room." More baseball cards. Our cadet/orderly/cook has calendars for 1910 and 1911 on the wall, and a crest for the Quartermaster Corps on the bed. Thanks to Kurt for suggesting this photo. View full size. National Photo Company Collection glass negative, Library of Congress.

December 1910. Coal Creek, Tennessee. "Hard work and dangerous for such a young boy. James O'Dell, a greaser and coupler on the tipple of the Cross Mountain Mine, Knoxville Iron Co., in the vicinity of Coal Creek. James has been there four months. Helps push these heavily loaded cars. Appears to be about 12 or 13 years old." Photograph and caption by Lewis Wickes Hine. View full size.

"Lithnan & Latham, F Baltcry. 12 Peduri [?]" is the Library of Congress's uncertain transcription of the handwriting on this circa WWI negative. Which seems to say "F Battery," not Baltcry. "Lithnan" and "12 Peduri" are also iffy. Who can help us sort it out? National Photo Company Collection glass negative. View full size.

"Washington Times. 6929 Ninth Street," circa 1920. View full size. National Photo Company Collection glass negative. Fast-forward to 6929 today.

April 14, 1925. "Margaret Gorman with 'Long Goodie.' " Margaret, the Girl With the Crocodile Car, was the first-ever Miss America. National Photo Company Collection glass negative, Library of Congress. View full size.

Continuing our high-definition tour of Washington, D.C., real estate circa 1920. "Washington Herald. 953 Shepherd Street NW." View full size. National Photo Company Collection glass negative. 953 Shepherd Street today.

June 28, 1913. Washington, D.C. "Massachusetts Avenue Heights." Woodland Drive at 32nd Street NW. National Photo Co. glass negative. View full size.

December 8, 1924. "Samuel Cletus Slemp, Senate page. Nephew of C. Bascom Slemp." National Photo Company Collection glass negative. View full size.

"Washington Sanitarium. Takoma Park, Maryland," circa 1928. View full size. National Photo Company Collection glass negative. The doctor will see you now!

"Washington Times. Interior, Hamilton Street house" circa 1920. View full size. National Photo Company Collection glass negative, Library of Congress.

1921. "Margaret Gorman in Birmingham car." Whose reptilian body has an alligator finish. In 1921 Margaret was both the first Miss Washington, D.C., and the first Miss America. View full size. National Photo Company glass negative.

District of Columbia, 1919 or 1920. "Washington Times, 609 to 637 Princeton Street." View full size. National Photo Company Collection glass negative.

August 24, 1929. "Donald H. Brooks, Bureau of Standards." View full size. National Photo Company Collection glass negative. So -- what's he doing?