From Introduction:
"March 15th, 1919" is the second installment in the Odds and Ends series of web enhancements for Heaven & Earth. It is not an adventure in the proper sense, but a springboard for possible adventures. No fleshed out scenario is provided in these pages, and gamemasters are encouraged to personalize the material presented to fit their own games.
At the heart of "March 15th, 1919" is a suicide letter. This letter, presented below, is intended to be a springboard for one or more Heaven & Earth investigations. The letter can be a catalyst for an adventure, the explanation behind an adventure, or anything else the GM sees fit. Following the letter, GMs will find three suggestions for using it in their games. Gamemasters may choose from any of the three suggestions or ignore all three, instead incorporating the contents of the letter in a manner of their own creation.