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