In the Yiddish journal, Vegetarian World, 1921, Miss Rogin's Vegetarian Restaurant and Tea-House is advertised as located at 31 St. Marks Place (see page 296 of The Dairy Restaurant).
In the Soviet Pictorial Review for May 1923, Rogin's Vegetarian Restaurant, is advertised as being at 29 St. Mark's Place. See below.
An ad in the Daily Worker from 1927 lists Mrs. Rogin Vegetarian Restaurant at 249 East 13th Street. Proprietors Mrs. Rogin and Markoff.