Mennonite Church USA Archives:
Calvary Hour Souderton Pennsylvania Dinner Meeting
Mennonite Church USA Archives:
Calvary Hour Homemaker's Quartet
Mennonite Church USA Archives:
Calvary Hour Musicians and Staff
Mennonite Church USA Archives:
Calvary Hour Musical Group
Mennonite Church USA Archives:
Calvary Hour Akron Studio Recording
Mennonite Church USA Archives:
Calvary Hour Radio Studio
Mennonite Church USA Archives:
Calvary Hour Amstutz Sisters' Trio, 1961
Mennonite Church USA Archives:
Calvary Hour Broadcasting Studio
Mennonite Church USA Archives:
Calvary Hour Broadcasting Studio Exterior
Mennonite Church USA Archives:
Calvary Hour Annual Meeting, 1977
Mennonite Church USA Archives:
Calvary Hour Bill and Bob Detweiler at microphone, undated
Mennonite Church USA Archives:
Calvary Hour Bill and Bob Detweiler, undated
Mennonite Church USA Archives:
Calvary Hour Bill and Bob Detweiler in office, undated
Mennonite Church USA Archives:
Calvary Hour Bill and Bob Detweiler with Anna Detweiler, 1960
Mennonite Church USA Archives:
Calvary Hour William and Anna Detweiler, 1940-1950
Mennonite Church USA Archives:
Calvary Hour Bill and Bob Detweiler, 1974
Mennonite Church USA Archives:
Calvary Hour Bill and Bob Detweiler, 1935