Hanna-Barbera Scooby-Doo...Mystery Comics #23

In "Napoleon Lives!", the gang teams up with Professor Milton and reporter Mr. Freedman to test a ghost-contacting device—only to summon the legendary Napoleon Bonaparte himself. Disoriented and knocking over the machine, Napoleon claims to prove his identity by matching his signature to an authentic 19th-century autograph from Hamilton Warner, leaving Fred skeptical and determined to uncover the truth. Written by Mark Evanier and illustrated by Dan Spiegle, this 1974 mystery blends historical intrigue with classic Scooby-Doo antics, all captured in a cover by Dan Spiegle.