MAKE A MEME View Large Image Boston Time-Ball.jpg en The Boston Time Ball on the roof of the Equitable Life Assurance Society building at the corner of Devonshire and Milk Streets Boston MA 1881 Information relative to the construction and maintenance of time-balls ...
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Keywords: Boston Time-Ball.jpg en The Boston Time Ball on the roof of the Equitable Life Assurance Society building at the corner of Devonshire and Milk Streets Boston MA 1881 Information relative to the construction and maintenance of time-balls United States War Department Washington D C 1881 http //blogs brown edu/ladd/2015/12/22/the-boston-time-ball/ Winslow Upton and William Babcock Hazen editors other versions PD-USGov Time balls Uploaded with UploadWizard
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