During his tenure, he organized nineteen exhibitions ranging from John Singleton Copley in the 18th century to The Lane Collection and its important holdings of modern art.
As curator, he guided the museum's acquisition of over three hundred paintings, from 17th century limners to Jackson Pollock and Andy Warhol.
At Yale, he built the collection of 19th century American landscape and still lifes; his major purchase was Frederic Edwin Church's Mt.
In 2014, he established Theodore E. Stebbins Advisors, which serves as a consultant on issues of American art to museums, foundations, and a small number of private collectors.
[6] His article entitled The Problem of Tort Liability for the Art Expert has been reproduced in numerous casebooks and for many years remained a standard reference.