Edward Swift, Lewis' 14 year-old son, discovered NGC 6091 = Sw. II-39 on 8 Jul 1885 and noted "vF; vS; R; * nr north." Their position matches MCG +12-15-054, though MCG fails to label this galaxy as NGC 6091. Lewis Swift credited his son with the discovery in the errata to his 6th discovery list.

400/500mm - 17.5" (4/18/87): faint, small, round, weak concentration.

600/800mm - 24" (6/14/15): fairly faint, fairly small, irregularly round, very small bright core, 25" diameter. A mag 12 star is 1.4' NNW. IC 1204 lies 3.6' WNW.

Notes by Steve Gottlieb