In the early 1900s, people loved collecting their family’s and friends’ signatures in autograph books. This evolved into collecting ghost signatures, which were made by signing a piece of paper with slow-drying ink and then quickly folding the sheet over to create a personalized inkblot. Source

In the early 1900s, people believed that smoking cigarettes turned you into a homicidal maniac. The belief was so common that ‘cigarette fiend’ became a valid defense for murder, and the term often accompanied an insanity plea. Source

A signed pledge card from the Primitive Methodist Anti-Cigarette League:

The New York Journal from November 14, 1899, about a case of “cigarette fiend:”