The listing, Vintage New York City Photo Souvenir Pack has ended.
I have no idea of the date on these, my guess is maybe 40's - 60's, this is a kind of large range, if anyone has any idea, please let me know. The outside of the package says "Alfred Mainzer , 230 Fifth Ave. New York" along the side, and "New York City --- Genuine Photographic Souvenir Views" on the top. Apparently they were 25 cents. There are about 10 or so pics included in the package. The cover is a little raggedy, but the pictures are in very good shape.