They

From Author Wars - https://authorwars.com/books/they-93140.html

Overview:

Title: They
Author: D. V. Gilder
Year: 1955
Type: Short Fiction

Variant Titles:

1957. Ils

Editions/Publications:

Unknown. Beyond Fantasy Fiction, #10 1954 (Unknown, D. V. Gilder, Galaxy Publishing Corporation, $0.35, 132 pages, digest, MAGAZINE)