Paul Kaufman, 93, educator, author and authority on Shakespeare who organized the English department at American University, where he was professor of English literature from 1920 to 1930, died of congestive heart failure Thursday at his home in Seattle, Wash.

Dr. Kaufman was an English instructor at Yale University and taught at Harvard University and the University of Bordeaux in France before joining American University in 1920.

He became a recognized authority on Shakespeare and the British romantic period. He was editor of the Bulletin of the Shakespeare Association of America from 1924 to 1933.

He was professor of psychology at the University of Puget Sound in Tacoma, Wash., from 1948 until his retirement in 1956.

In 1958, he became bibliography consultant for the libraries of the University of Washington in Seattle.

For the next 20 years, Dr. Kaufman researched borrowers' records of 18th century English libraries and published his results in more than 50 monographs.

He was the author of several scholarly books, including "Outline Guide to Shakespeare," "Heralds of Original Genius," "Borrowings From The Bristol Library, 1773-1784," and "Libraries and Their Users," published in 1969.

Dr. Kaufman was born in Providence, R.I. He earned a bachelor's degree and a master's degree in philosophy from Yale University and a doctorate in English philology from Harvard University.

He had been a member of the Cosmos Club in Washington since 1924.

His first wife, the former Clarice Ryther, died in 1947. He then married Helen Andrews Kaufman, a retired professor of English at the University of Washington, who died last year.

Survivors include two sons, Roger W., of Lexington, Mass., and Louis S., of Clinton, Iowa, and two grandchildren.