William Herschel discovered NGC 4136 = H II-321 = h1108 on 13 Mar 1785 (sweep 387) and recorded "pB, L, gbM." His position matches UGC 7134. On 2 Apr 1827 (sweep 67), John Herschel wrote, "vF; vL; 5 or 6' diam."

300/350mm - 13.1" (4/12/86): moderately bright, round, brighter core, stellar nucleus. NGC 4131/NGC 4132 pair lies 38' SSW.

Notes by Steve Gottlieb