A 1920s Sourcebook for the City by the BaySECRETS OF SAN FRANCISCO provides excellent background for a Call of Cthulhu campaign set in the Bay Area of the 1920s. It includes urban geography, civic history, research venues, and mythos lore.
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Developer
SmiteWorks USA, LLC
metacritic_name
Fantasy Grounds - Call of Cthulhu: Secrets of San Francisco