The license was issued to Williams in 1970 and was among the late slugger's personal effects that were displayed in an auction preview Saturday at the Knotty Pine Auction Service in West Swanzey, N.H., The Boston Globe reported.
"We had a tremendous amount of interest in it, and we had a lot of very disappointed people," auctioneer John Pappas said.
The license wasn't the only one of Williams' effects stolen, Pappas said. Also missing were notes Williams had made about his favorite fishing spots and a lists of friends' phone numbers he had written down on a piece of paper and tucked into a fishing hat, the Globe said.
The items were from his 1968-1972 marriage to the late Dolores Wettach Williams and were being auctioned by her estate. The two lived in Putney, Vt., where Williams, whose major league career with the Boston Red Sox spanned from 1939 to 1960 with a break for service in World War II, pursued hobbies such as hunting, fishing and car collecting, the newspaper said.