John Herschel discovered NGC 3307 = h3278 on 22 Mar 1836 and "eeF. The 3rd of a group [with NGC 3285 and NGC 3270]." He only recorded this object once in 4 different sweeps of the cluster and his position falls in a blank region, 5' south of ESO 501-031 = PGC 31430. He commented in the Cape that his original figure was 5' further north but due to some confusion it was crossed out. But the original declination matches ESO 501-031. MCG does not label -04-25-029 as NGC 3307. I am surprised the Herschel picked up this galaxy as it's easily the faintest one he saw in the cluster.

600/800mm - 24" (3/28/17): at 260x; faint, small, slightly elongated SW-NE, 24"x18", very low even surface brightness. Easily the faintest of the 6 NGCs in the core of AGC 1060. Situated 4.2' W of NGC 3309.

24" (2/22/14): at 260x, this member of AGC 1060 (Hydra I) appeared faint, small, elongated 2:1 SSW-NNE, 24"x12", low even surface brightness. Located in the core of the cluster, ~5' W of the NGC 3309/3311 pair and 9.5' NW of mag 6.6 HD 91964.

Notes by Steve Gottlieb