This ISFDB publisher name may conflate two American publishing companies, and also a division or imprint or two that succeeded them.
See also these ISFDB publishers or imprints:
• Thomas Y. Crowell
(1886 to 1977)
(1947 to 1969)
Timespans are those of database publication records as of April 2019.
Crowell-Collier (The Crowell-Collier Publishing Company), established 1939 by merger and rename, is in the database primarily as a magazine publisher, in part as the successor to P. F. Collier and P. F. Collier & Son.
The relation of "Crowell" to those two publisher/imprints and to the 1902–1939 Crowell Publishing Company is unknown.
John S. Crowell
led Mast, Crowell and Kirkpatrick Publishers of Springfield, Ohio, from 1881. In 1902, four years after the death of founder-owner Phineas P. Mast, he acquired the Kirkpatrick interest and established the Crowell Publishing Company, with offices in Springfield and New York City.
Thomas Y. Crowell
(1836–1915) operated the New York book bindery of Brenjamin Bradley after Bradley's death in 1862, and acquired it in 1870. He began publishing books in 1876. Thomas Y. Crowell Co., sometimes T. Y. Crowell or Crowell in newspapers, was acquired by Harper & Row in 1978.