................ 151
Building Third Floor, Music Room ......... 152
Fred Ott’s experimental room......................................... 153
THE POST-EDISON YEARS: Period IV: 1932-1962 ........................................ 166
vi
............................. 154
Historical Occupancy and Furnishings...... 164
Building Machine Shops..................................... 153
Building Period II: 1901-1914.... 139
Building Second Floor Vacuum Pump Room and Glass
Blower’s Room, Period 1887-1900 ............................................... 165
Engineering Department ...... 160
Building ..................................... 142
Building Drafting Room, Period 1887-1900 and Period II:
1901-1914 ......................................................................................................... 141
Building Second Floor Experimental Rooms, Period III:
1915-1931 .. 144
Building Third Floor, Recording Studio .... 161
Building Chemical Store Room............. 144
Building Third Floor, Lamp Test Room ............................ 165
Ediphone Development........................................................... 143
Building Third Floor, Period 1887-1900 ............................................................................ 141
Building Room ..................... 140
Building Second Floor Vacuum Pump Room and Glass
Blower’s Room, Period II: 1901-1914................................................... 143
Building Drafting Room, Period III: 1915-1931 ............. 162
Building Pattern Shop................ 165
Historical Research Department......................................................................................................................... 140
Building Second Floor Experimental Rooms, Period 1887-
1900 and Period II: 1901-1914................................................................................. 162
Building . 152
Photographic department.................................. 141
Building X-Ray Room.............................................................. 146
Building Third Floor, Central Open Area.............................................. 146
Building Third Floor, Educational Film Studio................................................................................................................................................................................................................................................................................ 152
Building Powerhouse, Period 1887-1900 .......................................................... 151
Building Third Floor, Offices (South Side) .. 165
Building General ...................................................................................................................Building Precision Machine Shop, Period II: 1901-1914 .... 137
Building Precision Machine Shop, Period III: 1915-1931 ............................................................................... 144
Building Third Floor, Period II: 1901-1914 and PeriodIII:
1915-1931 ................................... 154
Building .......................... 144
Building Third Floor, Storage Battery Test Department....................... 163
Building Library ........................................ . 151
Albert Petit’s experimental room .........................................
