Francis Leavenworth discovered NGC 3724 = LM 2-443 in 1886 and noted "mag 15.0, 0.4' dia, R, sbMN, 2nd of of 2 [with NGC 3722]." There is nothing at his exact position, though a number of candidates are in the area. MCG -01-30-007 = PGC 35757 is often taken (RNGC, PGC, NED, HyperLeda) as NGC 3724 and MCG -01-30-005 = PGC 35746 is taken as NGC 3722. The MCG does not label MCG -01-30-007 as NGC 3724. This pair is between ~1.7 min of RA east of Leavenworth's positions (not an uncommon error) though the relative orientation (southwest-northeast) is wrong. Corwin proposes the identification NGC 3722 = PGC 170153 and NGC 3724 = IC 2910. These two galaxies are less than 1 min of RA west of Leavenworth's position and match the correct orientation.

MCG -01-30-007 was possibly discovered by Andrew Common 6 years earlier with his 36-inch reflector. In his description for NGC 3732 (#20), he mentions "a cluster of 3 similar ones 15' N", which appears to refer to MCG -01-30-005, -007 and -008, though Dreyer did not assign NGC designations to Common's trio.

400/500mm - 17.5" (4/5/97): extremely faint, small, elongated 2:1 SW-NE. Brightest in close trio with MCG -01-30-005 = NGC 3722: 1.8' SE and MCG -01-30-008 2.3' NE, although still required averted vision. The NGC identifications in the group (from Leavenworth) are uncertain due to poor positions and several nearby faint galaxies.

600/800mm - 24" (3/9/13): fairly faint, small, elongated 2:1 SW-NE, 24"x12", contains a small bright core with fainter extensions. Middle galaxy in a 4' string with NGC 3722 1.8' SW and MCG -01-30-008 = PGC 35771 2.4' ENE. Both of these companions are comparable in brightness. Also much fainter MCG -01-30-006 is 1.1' SW. PGC 35771 (labeled as NGC 3730 in the RNGC) appeared fairly faint, fairly small, elongated 5:2 WSW-ENE, 0.4'x0.15'. Member of a large group (USGC S171) at z = .021.

Notes by Steve Gottlieb