Édouard Stephan discovered NGC 3542 = St XIII-60 on 26 Mar 1884. His position matches CGCG 185-013 = PGC 33868.

400/500mm - 17.5" (3/12/94): faint, small, elongated 2:1 SW-NE, low surface brightness, no concentration. Forms a trio with NGC 3545 3.5' ENE and MCG +06-25-014 3.3' N. MCG +06-25-015 is at the edge of the field 11' N.

Notes by Steve Gottlieb