I found more references to 304 E 55th St in Manhattan alongside death notices. This address was not a cemetery, but rather a (now defunct) funeral home called Sutton Chapels:
DOUGHERTY—Edward G., Attorney at Law for Long Island Railroad Trainman and Car Man Unions, dear father of Edward, Sharon and Joan, nephew of Agnes Law and May Dougherty dear friend of Barbara lone Miller. Reposing at Sutton Chapels, 304 East 55 St. until Friday, 10:30 A.M. Mass of the Resurrection at 10:45 St. John the Evangelist, R.C. Church, 55th Street and 1st Avenue, at 10:45 A.M. Interment Long Island National Cemetery, Visitation 2 to 4 and 7 to 9 P.M.
SOKlRA—Frank, born in Scranton, Pa. Reposing at Sutton Chapels, 304 E. 55th St., N.Y.C. Religious services Saturday, Jan. 2, at 10 A.M. Interment Ferncliff Cemetery. Visitation Thursday, 7 to 10 P.M., Friday, from 1 to 10 P.M.
GUERRIERl—Lucretla, loving wife of John, devoted mother of Frank, Donato, Anthony, Michael and John, Jr., reposing at Sutton Chapels, 304 E. 55 St., until Thursday, 9:30 A.M., requiem Mass Holy Family Church, on E. 47th St., at 10 A.M.