327 East 29th Street, New York, New York USA - Retail sales department (1922; 1924)

    Source · https://www.newspapers.com/image/409922814/?terms=%22einson-freeman%22&match=1

329 East 29th Street, New York, New York USA (1924; 1925)

Starr & Borden Avenues, Long Island City, New York USA (1936)

    Source · https://www.ancestry.com/mediaui-viewer/tree/7976855/person/25786385863/media/42e536ea-fdf7-4d0c-b00f-9528cc79e7f6?_phsrc=Hqd2&_phstart=successSource

Morris M. Einson (founder, born in Vilnius around 1993, died 14 April 1936)

Arthur S. Freeman (President in 1936)

U.S. National Archives - Einson-Freeman Co., Inc.

The Brooklyn Daily Eagle - Morris Einson Dies in Palestine of a Heart Attack

Scientific American - Morris M. Einson interview

The Yonkers Herald

https://www.newspapers.com/image/281200756/?terms=%22einson-freeman%22&match=1