Zombie Abraham Lincoln plays a minor part in Night of the Raving Dead.
Sam & Max meet Zombie Abraham Lincoln outside The Zombie Factory, about half-way through the game. He then goes inside, only to be promptly killed by Flint Paper. They pick up his brain as an inventory item. When they put it in Jurgen's Monster, Sybil almost goes on a date with him, only to realize that the one she really wants is her Abe.
He later attends Abe's and Sybil's wedding at the end of What's new, Beelzebub? despite apparently disliking both bride and groom.