Near California and Powell Sts. Butler Building in the upper right, opposite Union Square; the beam hanging from the crane swung 18 feet, as measured by John Birmingham, the superintindent of the Hercules Powder Co. :4

Courtesy of UC Berkeley, Bancroft Library

http://www.oac.cdlib.org/ark:/13030/tf6m3nb5zg/?order=1

Title:

Near California and Powell Sts. Butler Building in the upper right, opposite Union Square; the beam hanging from the crane swung 18 feet, as measured by John Birmingham, the superintindent of the Hercules Powder Co.

Contributing Institution:

UC Berkeley, Bancroft Library