Today we take air travel and space exploration and even UFOs for granted but in the 19th Century and early 20th Century anything in the sky was considered with wonder. This guide lists all the major concentrations (called 'flaps and waves') of Phantom Airship sightings throughout the world from the 19th Century to the end of WW1. Even today no one is sure what caused these scares. To help come to some conclusion this guide provides a review of the major cases and full (web and text)references and a bibliography.

Ufologists will obviously gain a lot of pre-flying saucer information from this guide. The guide would also be of interest to historians, folklorists, sociologists or anyone intrigued by mysteries.