proposal for a time ball at Boston, USA.
Contributors: Horsford, E. N.; Aked, Charles Kenneth.; Antiquarian Horological Society. Electrical Horology Group.
Publisher: Electrical Horology Group, Antiquarian Horological Society
Published: 1984
Place of publication: [UK?]
Language: eng
Notes: Reprint from: City of Boston; respecting the regulation of timepieces in the city / by E.N. Horsford, 1853. - (City document ; no. 75).

With a foot-note by Charles K Aked.
Table of contents: class: section