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Title | Date | Type | Setname |
| 76 |
 |
Unidentified Equipment. | 1930; 1931; 1932; 1933; 1934; 1935; 1936; 1937; 1938; 1939 | | uum_map |
| 77 |
 |
One of the first outdoor experimental telecasts. Philadelphia-1934. | 1934 | | uum_map |
| 78 |
 |
Biased Gem parts. | 1930; 1931; 1932; 1933; 1934; 1935; 1936; 1937; 1938; 1939; 1940; 1941; 1942; 1943; 1944; 1945; 1946; 1947; 1948; 1949 | | uum_map |
| 79 |
 |
Biased Gem parts. | 1930; 1931; 1932; 1933; 1934; 1935; 1936; 1937; 1938; 1939; 1940; 1941; 1942; 1943; 1944; 1945; 1946; 1947; 1948; 1949 | | uum_map |
| 80 |
 |
Biased Gem parts. | 1930; 1931; 1932; 1933; 1934; 1935; 1936; 1937; 1938; 1939; 1940; 1941; 1942; 1943; 1944; 1945; 1946; 1947; 1948; 1949 | | uum_map |
| 81 |
 |
Biased Gem parts. | 1930; 1931; 1932; 1933; 1934; 1935; 1936; 1937; 1938; 1939; 1940; 1941; 1942; 1943; 1944; 1945; 1946; 1947; 1948; 1949 | | uum_map |
| 82 |
 |
Biased Gem parts. | 1930; 1931; 1932; 1933; 1934; 1935; 1936; 1937; 1938; 1939; 1940; 1941; 1942; 1943; 1944; 1945; 1946; 1947; 1948; 1949 | | uum_map |
| 83 |
 |
Carl J. Christensen with camera. | 1920; 1921; 1922; 1923; 1924; 1925; 1926; 1927; 1928; 1929 | | uum_map |
| 84 |
 |
Composite picture of Mark II. | 1930; 1931; 1932; 1933; 1934; 1935; 1936; 1937; 1938; 1939; 1940; 1941; 1942; 1943; 1944; 1945; 1946; 1947; 1948; 1949 | | uum_map |
| 85 |
 |
Cyril Day working on a piece of machinery. | 1930; 1931; 1932; 1933; 1934; 1935; 1936; 1937; 1938; 1939; 1940; 1941; 1942; 1943; 1944; 1945; 1946; 1947; 1948; 1949 | | uum_map |
| 86 |
 |
ITT-Mark I. | 1930; 1931; 1932; 1933; 1934; 1935; 1936; 1937; 1938; 1939; 1940; 1941; 1942; 1943; 1944; 1945; 1946; 1947; 1948; 1949 | | uum_map |
| 87 |
 |
ITT-Mark I. | 1930; 1931; 1932; 1933; 1934; 1935; 1936; 1937; 1938; 1939; 1940; 1941; 1942; 1943; 1944; 1945; 1946; 1947; 1948; 1949 | | uum_map |
| 88 |
 |
ITT-Mark I. | 1930; 1931; 1932; 1933; 1934; 1935; 1936; 1937; 1938; 1939; 1940; 1941; 1942; 1943; 1944; 1945; 1946; 1947; 1948; 1949 | | uum_map |
| 89 |
 |
ITT-Mark I. | 1930; 1931; 1932; 1933; 1934; 1935; 1936; 1937; 1938; 1939; 1940; 1941; 1942; 1943; 1944; 1945; 1946; 1947; 1948; 1949 | | uum_map |
| 90 |
 |
ITT-Mark I. | 1930; 1931; 1932; 1933; 1934; 1935; 1936; 1937; 1938; 1939; 1940; 1941; 1942; 1943; 1944; 1945; 1946; 1947; 1948; 1949 | | uum_map |
| 91 |
 |
Mark I Anode. | 1930; 1931; 1932; 1933; 1934; 1935; 1936; 1937; 1938; 1939; 1940; 1941; 1942; 1943; 1944; 1945; 1946; 1947; 1948; 1949 | | uum_map |
| 92 |
 |
Mark II Phantom showing inside details. | 1930; 1931; 1932; 1933; 1934; 1935; 1936; 1937; 1938; 1939; 1940; 1941; 1942; 1943; 1944; 1945; 1946; 1947; 1948; 1949 | | uum_map |
| 93 |
 |
Mark III-ready to operate. | 1930; 1931; 1932; 1933; 1934; 1935; 1936; 1937; 1938; 1939; 1940; 1941; 1942; 1943; 1944; 1945; 1946; 1947; 1948; 1949 | | uum_map |
| 94 |
 |
Mark III-ready to operate. | 1930; 1931; 1932; 1933; 1934; 1935; 1936; 1937; 1938; 1939; 1940; 1941; 1942; 1943; 1944; 1945; 1946; 1947; 1948; 1949 | | uum_map |
| 95 |
 |
Philo T. Farnsworth | 1945; 1946; 1947; 1948; 1949; 1950; 1951; 1952; 1953; 1954; 1955; 1956; 1957; 1958; 1959; 1960; 1961; 1962; 1963; 1964; 1965 | Image/StillImage | uum_map |
| 96 |
 |
Complete-Mark II. | 1930; 1931; 1932; 1933; 1934; 1935; 1936; 1937; 1938; 1939; 1940; 1941; 1942; 1943; 1944; 1945; 1946; 1947; 1948; 1949 | | uum_map |
| 97 |
 |
Diode Cold Cathode Multipactor tubes....unique in that it has no filament. | 1920; 1921; 1922; 1923; 1924; 1925; 1926; 1927; 1928; 1929; 1930; 1931; 1932; 1933; 1934; 1935; 1936; 1937; 1938; 1939 | | uum_map |
| 98 |
 |
First design Mark III Cathode. | 1930; 1931; 1932; 1933; 1934; 1935; 1936; 1937; 1938; 1939; 1940; 1941; 1942; 1943; 1944; 1945; 1946; 1947; 1948; 1949 | | uum_map |
| 99 |
 |
ITT-Mark I. | 1930; 1931; 1932; 1933; 1934; 1935; 1936; 1937; 1938; 1939; 1940; 1941; 1942; 1943; 1944; 1945; 1946; 1947; 1948; 1949 | | uum_map |
| 100 |
 |
ITT-Mark I. Room lite only-tube not operating. | 1930; 1931; 1932; 1933; 1934; 1935; 1936; 1937; 1938; 1939; 1940; 1941; 1942; 1943; 1944; 1945; 1946; 1947; 1948; 1949 | | uum_map |
