cpi

see

This image is in NARA as 111-SC-13999. Date taken July 4, 1918. it was taken by L.t. H. P. Kingmore of the Signal Corps. "Pres. Wilson watching wreaths being placed at Washington's tomb by representatives of allied nationalities." Link (catalog.archives.gov/id/55188148)

The plane is a Nieuport 28 wearing the "hat in the ring" emblem of the 94th Aero Squadron. The 94th were training in their new Nieuports in France in Spring 1918.

"Ⓒ C.P.I." is interesting CPI refers to the Committee on Public Information, an "independent" US agency during WWI established to drum up support at home for the war in Europe.

Number 14 in color -

Thanks Seuss., we'll add that info to the catalog record.
The CPI probably distributed the photo to news photo companies like Bain for them to distribute to newspaper and magazines.

The Imperial War Museum site has another photo that seems to be taken of the same activity and the same train, with the caption:
"American stretcher bearers carrying wounded soldiers to an ambulance train at Horreville, 27 April 1918."

THE GERMAN SPRING OFFENSIVE, MARCH-JULY 1918© IWM (Q 93184)

related images at IWM site:
"Wounded American soldiers reading books on board an ambulance train at Horreville, 26 April 1918."

THE GERMAN SPRING OFFENSIVE, MARCH-JULY 1918© IWM (Q 93186)

"American black soldiers, cooks of the hospital train No. 54, at Horreville, 27 April 1918."

THE GERMAN SPRING OFFENSIVE, MARCH-JULY 1918© IWM (Q 93185)

Thanks for your helpful sleuthing, Art Siegel!

Caption from From "Catalogue of official A.E.F. photographs", Published 1919, roughly same as IWM caption. archive.org/stream/cu31924027944598#page/n171/mode/2up