A pseudonym used by William Ard. House name from 1960 to 1986.

In 1956, hardboiled writer William Ard turned his pen westward and introduced one of the genre’s most enduring characters: Thomas Buchanan, better known as just “Buchanan,” a drifter as likeable as he is deadly. The first novel in the series was called The Name’s Buchanan and appeared under the pseudonym “Jonas Ward.”

Only the first 6 books in the series were written by Ard, and the last, Buchanan on the Prod, was completed by Robert Silverberg.

After Ard's death in 1960 "Jonas Ward" became a house name. Brian Garfield did one and then William R. Cox took over the series and it continued until 1986.