William Herschel discovered NGC 4134 = H II-371 = h1101, along with NGC 4131 and 4132, on 11 Apr 1785 (sweep 396). He recorded the trio as "Three, the time and number belongs to the largest [NGC 4134] which is F, irregular. I suspect a fourth, but could not stay to ascertain it, though I am pretty sure. The other two NGC 4131 and NGC 4132] are vF, S, mE." John Herschel made three observations (first on 31 Mar 1827) and measured a fairly accurate position.

400/500mm - 17.5" (3/20/93): moderately bright, moderately large, elongated 5:2 NW-SE, broad concentration, NGC 4132 5' NNW. Brightest and third of three spiral galaxies almost collinear in a NW-SE direction!

Notes by Steve Gottlieb