Background
Sellers was the great-grandson of Charles Willson Peale.
Sellers was the great-grandson of Charles Willson Peale.
He graduated from Haverford College with a Bachelor in 1925, Harvard University with an Master of Arts in 1926, and Temple University with a Doctor of Philosophy in 1957.
From 1937 to 1949 Sellers was the bibliographic librarian at Wesleyan University. In 1947 he became a research associate for the American Philosophical Society of Philadelphia, remaining there until 1951. In 1949 he became curator of the Dickinsoniana Collection at Dickinson College, and head librarian in 1956 after the retirement of May Morris.
In 1956 he also became the librarian of the Waldron Phoenix Belknap Junior.
Research Library of American Painting in Winterthur, Delaware, remaining until 1959, when he became editor of the American Colonial Painting magazine. With the opening of the May Morris Room in the new Spahr Library, Sellers once again became historian and curator of the Dickinsoniana Collection in 1968, holding this post until his retirement in 1979, when a grateful Dickinson College awarded him an honorary doctorate of letters.
Sellers helped with an exhibition of Peale"s work at the Metropolitan Museum in New York City. His papers are held at the American Philosophical Society, and the Smithsonian Institution.