William Herschel discovered NGC 4326 = H II-141 = h1213 on 13 Apr 1784 (sweep 191) and recorded "Three [with NGC 4333 and 4339], the last [NGC 4339] is the largest." JH logged "vF; S; R; bM; 10"; the first of 3 in a triangle." and measured an accurate position.

400/500mm - 17.5" (3/28/87): fairly faint, small, round, bright core. First of three and forms a right angle with NGC 4333 3.3' SE and NGC 4339 5.7' E. A mag 11 star is 3.0' N. Located within the NGC 4339 group.

Notes by Steve Gottlieb