Vintage "Souvenir Folder" of Bridgeport, Connecticut, a type of collectible item that contains several postcard-sized views folded in an accordion style within a paper cover.
These folders were popular in the early 20th century as a memento for tourists, serving a similar function to picture postcards but offering multiple images.
The front features an illustration of the Post Office and is addressed to a "Mrs. Gina Tripet" at 525 West 47 Street, apt. 11, New York City.
A one-cent stamp is visible in the upper right corner, consistent with the postal rates for mailing such items as printed matter in that era.