Royal H. Frost discovered IC 3528 = F. 970 on a plate taken on 7 May 1904 at Harvard's Arequipa station. He noted "bM, magn 14."
400/500mm - 17.5" (5/23/87): extremely faint and small, round. Forms the fainter member of a pair 2' ENE of NGC 4540.
Notes by Steve Gottlieb