Originally located in Gary, then moved to Hobart (1975), then to Merrillville (1986), then to Hobart again (1999)
Absorbed by Dunes Lodge #741 - Portage (2002)
Calvin W. Prather Lodge No. 717, F.&A.M.
Indianapolis (Marion Co.): 1921
Prather Masonic Hall
Named after M.W. Brother Calvin W. Prather, Past Grand Master (1880-1882) and Past Grand Secretary (1901-1920) - Grand Lodge of Indiana, F.&A.M.; Past Grand High Priest (1887) and Past Grand Secretary (1900-1919) - Grand Chapter of Indiana, R.A.M