Gamescience, pbm kit for the Renwal Gamescience 1968 game.
This module includes the rules and sheets for play by mail, for Gamescience's Battle of Britain game. A air bombing campaign game of the fight to control the air above England in WW2. The game is a forerunner to Avalon Hill's Luftwaffe.
The sheet allow for plotting of air units to be mailed to each other or a moderator for distant play.