His genre subjects include Rip Van Winkle, The News Boy, and Boyhood of Washington.

He also painted portraits of Angelica Singleton Van Buren, Bishop White, Chief Justices Marshall and Nelson, Jacob Barker, William Wirt, Audubon, DeWitt Clinton, Richard Varick, Martin Van Buren, Francis L. Hawks, and William H.

[2] Thomas L. McKenney assigned Inman, who was an accomplished lithographer, the task of copying more than a hundred oil paintings of Native American leaders by Charles Bird King to translate into a printed book, the History of the Indian Tribes of North America.

[7] Inman also painted illustrations for The Sketch Book by Washington Irving and The Last of the Mohicans by James Fenimore Cooper.

[5] During a year spent in England in 1844–1845, he painted Wordsworth, Macaulay, John Chambers, Sir William Stewart, Baronet of Blair and other celebrities.