John Herschel discovered NGC 3620 = h3338 on 31 Mar 1837 and logged "F; pmE; gbM; 50". His position and description matches ESO 038-010. This galaxy is not included in the first edition of the Uranometria 2000.0 star atlas or it companion Deep Sky Field Guide.

600/800mm - 24" (4/5/08 - Magellan Observatory, Australia): fairly faint, very elongated 3:1 E-W, 1.2'x0.4', weak concentration. A mag 14.5 star is pinned against the south side, a little west of the center. I reobserved this galaxy not realizing it was logged the previous night. Located 32' NE of the bright reflection nebula IC 2631.

24" (4/4/08 - Magellan Observatory, Australia): fairly faint, moderately large, very elongated 3:1 E-W, 1.5'x0.5', small brighter core. A mag 14 star is barely off the south side (west of center). The large reflection nebula, IC 2631, lies 32' SW.

Notes by Steve Gottlieb