Credited to Edward S. Holden

6 inventions and discoveries

Invention or discovery	Date	Type
NGC 3979	April 23, 1881	low-surface-brightness galaxy
NGC 3843	April 27, 1881	lenticular galaxy
NGC 4576	April 27, 1881	intermediate spiral galaxy
NGC 3441	April 6, 1882	radio galaxy
NGC 3200	April 10, 1882	spiral galaxy
NGC 4581	April 20, 1882	elliptical galaxy