Inventor Name
Mack, William
Repository
State Historical Society of Wisconsin
Archives Division
816 State Street
Madison, Wis. 53706
http://www.wisconsinhistory.org/libraryarchives/index.asp
Physical Description
0.1 c.f. (1 folder)
Summary
British letters patent granted to William Mack of Terre Haute, Ind., through Alfred J. Boult, Middlesex, England, in regard to an invention that improved the holders of opera glasses.
