A photograph postcard showing Denver & Rio Grande Western (DRGW) 316, 2-8-0,narrow gauge, Montrose, CO.

A photograph postcard showing Chicago, Burlington & Quincy (CBQ) 5111, 2-8-2, on freight extra, westbound, just west of Keenesburg, CO.

A photograph postcard showing Chicago, Burlington & Quincy (CBQ) 2955, 4-6-2, on freight extra, eastbound, just west of Keenesburg, CO.

A photograph postcard showing Chicago, Burlington & Quincy (CBQ) 9914, 4-6-2, diesel-electric, passenger train No. 40, "Exposition Flyer", eastbound, just west of Keenesburg, CO, 17 cars, 60 mph.

A photograph postcard showing Chicago, Burlington & Quincy (CBQ) 5127, 2-8-2, on westbound freight extra [white flags on locomotive], just west of Keenesburg, CO.

A photograph postcard showing Denver & Rio Grande Western (DRGW) 3617, 2-8-8-2, on westbound mixed freight extra, with helper locomotive on rear, "climbing toward the Continental Divide", above Fireclay, CO.

A photograph postcard showing Denver & Rio Grande Western (DRGW) 3604, 2-8-8-2, on eastbound mixed freight, headed downgrade, just east of Coal Creek, CO, 25 mph.

A photograph postcard showing a Rio Grande Southern (RGS) Galloping Goose #5 [with Pierce Arrow body], stopped at Lizard Head Station, CO. [See 2008.008.4880, 6127, 6128 & 6802]

A photograph postcard showing Chicago, Burlington & Quincy (CBQ) 9914, A-A streamlined diesel-electric on passenger train No. 40, "Exposition Flyer", near Keenesburg, CO, 68 cars, 25 mph.

A photograph postcard showing Union Pacific (UP) 2867, 4-6-2, on westbound train No. 15, "The Columbine", near Sans Creek Junction, CO, 6 cars, 30 mph.

A photograph postcard showing the Santa Fe (ATSF) 1695, 2-10-2, helping diesel engines on Train No. 21, "El Capitan", at Raton Pass, CO.

Postcard of Fort Sam Houston Hospital in San Antonio, Texas. The image is an illustration of a pink, multi-story building viewed from the side. "Fort Sam Houston Hospital, San Antonio, Texas" is printed in the upper left corner of the image. There is correspondence addressed to "Miss Theresa Fontaine" and information about the hospital on the back of the postcard.

Postcard of city buildings behind a small park with a fountain, and text that says "Marlborough Blenheim Hotel, Atlantic City, N.J." A handwritten note addressed to Misses Hellen & Caroline Aten says "Dear Folks: Wish you were here. Plenty of 'Doughboys.' Try and see you later in the week. Ted Lockwood."

Postcard of the Wrigley Building and Tribune Tower on the skyline of Chicago. A typed note on the back of the postcard says "Two of Chicago's most interesting and beautiful buildings are the Tribune Tower and the Wrigley Building. Facing each other on Michigan Boulevard, they form an impressive gateway to the North Side of Chicago." A handwritten note addressed to Miss Helen & Ted Aten says, "Dear Helen & Ted, How are the pickles going? My bites seem to be improving. Next time I'll bring something that will kill them instead of me. Say hello to Jiggs for me. Love Ruthie."

Postcard of a hotel surrounded with palm trees, with text that says "Looking North on Collins Ave., Miami Beach, Fla." A handwritten note addressed to Miss Helen Aten from Pvt. John S. Hofnagle says "This sure is a beautiful place, but you would not like it, it is too hot here for you. One block from the ocean. It looks larger than Atlantic City. J.S.H."

Postcard of a long bridge over water, with land on the horizon at the end of the bridge. Typed text above the photo says "2- Sandusky Bay Bridge on Ohio Route No. 2, between Sandusky and Port Clinton, Ohio." A handwritten note addressed to Helen H. Aten from Woodrow W. Aten at Camp Perry says, "Dear Helen and all. I am making use of my car weekends at least this one. Went to an Amusement park called Cedar Point and covered this fill also a toll bridge. I have Lt. Crew with me- He is a swell boy and very good looking. Will write more later. Be good. Woodrow."

Postcard with a colored drawing of the entrance to the Frozen Niagara rock structure in Mammoth Cave in Kentucky. A note from Harold Landau to Helen Landau is written on the back.

Postcard with a colored drawing of a log cabin, labeled Lincoln's birthplace in Hodgenville, Kentucky, and the inscriptions in memorial hall. There is a note on the back from Harold Landau to his wife Helen.