Bernard Joseph Stanislaus Cahill (London, January 30, 1866 - Alameda County, October 4, 1944), American cartographer and architect, was the inventor of the octahedral "Butterfly Map" (published in 1909 and patented in 1913). An early proponent of the San Francisco Civic Center, he also designed hotels, factories and mausoleums like the Columbarium of San Francisco.
Bernard Joseph Stanislaus Cahill (London, January 30, 1866 - Alameda County, October 4, 1944), American cartographer and architect, was the inventor of the octahedral "Butterfly Map" (published in 1909 and patented in 1913). An early proponent of the San Francisco Civic Center, he also designed hotels, factories and mausoleums like the Columbarium of San Francisco.
Source: Wikipedia "Bernard J. S. Cahill" · CC BY-SA 4.0
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