Lewis Swift discovered NGC 6479 = Sw. I-76 on 20 Apr 1885 and recorded "pS; eF; R; 3 stars north point to it, the north one the brighter." His position is less than 1' northeast of UGC 10996 and his description applies. I'm surprised, though, he made no mention of the mag 6.6 star 6.5' northeast.
400/500mm - 17.5" (5/10/91): faint, fairly small, round, fairly low almost even surface brightness with a very weak concentration. Observation hampered by mag 6.6 SAO 30593 6.5' NE. Collinear with three stars to NNW including two mag 12 stars at 2.9' and 4.3' and a mag 10 star at 7.7'.
Notes by Steve Gottlieb