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The address of the La Mesa Historical Society Inc is: Po Box 882, La Mesa, CA 91944
The web address of the La Mesa Historical Society Inc is: Lamesahistory.com
The address of the House Of Ukraine is: 4350 Palm Ave, La Mesa, CA 91941
The address of the Pacific Southwest Railway Museum is: 4695 Nebo Dr, La Mesa, CA 91941-5259
The address of the Southwestern Prospectors Miners Association is: Po Box 904, La Mesa, CA 91944-0904