Albert Marth discovered NGC 4266, along with NGCs 4249, 4252, 4282 and 4287, on 26 May 1864. His position matches UGC 7368.

400/500mm - 17.5" (3/24/90): very faint, small, edge-on WSW-ENE. The view is hampered by mag 8.5 SAO 119331 at the NW edge of the galaxy! Faintest of 8 galaxies in the field including NGC 4282, NGC 4270, NGC 4259, NGC 4268, NGC 4273, NGC 4281 and IC 3153.

600/800mm - 24" (4/28/14): fairly faint, thin edge-on 6:1 WSW-ENE, 1.2'x0.2', even surface brightness. Although this is a nice streak, the galaxy is partially masked by mag 9.1 HD 107228 just off the NW flank (40" from center). In a rich region of galaxies, with NGC 4270 4.9' SSW, IC 4153 8.6' SSW, NGC 4282 10' ENE, NGC 4259 11' SSW, NGC 4281 13' SE and more. Mag 7.3 HD 107258 lies 9' NNE.

Notes by Steve Gottlieb