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