Series 1. Biographic Files 1934-1999
Early career documents, 1939-1946 and 1956-1958
Technical Performance of the "Gee" Navigation Radio System by Preist, D., 1946-09
Donald Preist memoir, 1997
World War II recollections collected by Preist, 1982-1990, incl.
Institute of Electrical and Electronics Engineers Inc. membership business, 1970-1975, incl.
"Fascinating Tubes" by Preist, D., IEEE Transactions on Electron Devices journal, 1984-11
Seminar on the History of Radar Development to 1945, Institution of Electrical Engineers London UK, 1985
Writings and reflections by Preist, 1979-1997, incl.
Biographical miscellany for Talcott, Ruth C.
Biographical miscellany
Preist feedback on Electronic Engineers Handbook, 1994
Preist declaration statement for Comark, 1995-06
Preist's talk on Ed Ginzton, 1971-05-25
Eimac history, clippings and notes
Eimac anniversary booklet, 50 Years of Excellence, 1934-1984
Transcript copy of interview with Bill Eitel, 1974
Preist interview notes with Jack McCullough, 1995
Correspondence regarding Eimac history, 1991-1997
Correspondence regarding Eimac history, 1996 January to 1996 July
Correspondence between Preist and Loring, Marshall, 1996-1997, incl.
Correspondence, various, 1943-1946, incl.
Correspondence, various, 1982-1999, incl.
Correspondence between Preist and Abraham, Wayne, 1985-1990, incl.
Correspondence between Preist and Badger, George, 1982-1996, incl.
International Journal of High Speed Electronics and Systems, Vol. 4, Number 4. 1993 December
The Resonator by S.G. McNees, Collins Radio Company, 1953 March
Correspondence received from Brown, Hank, 1996-1999, incl.
Correspondence received from Bryant, John, 1989
Correspondence between Preist and Goldfinger, Art regarding UHF test results, 1982-1990
Correspondence between Preist and Ritzenthaler, Jean regarding early transmitter tubes, 1997-1999
Correspondence received from Symons, Robert, 1994 and 1999
Correspondence received from Truefitt, Edward, 1979-1982, incl.
Correspondence with colleagues, 1985, 1992, and 1994, incl.
Series 2. Research Files 1950-1994 1973-1989
Research publications authored by Preist, 1950 to 1984
Research publications authored by Preist, 1949-1963; 1982-1991, incl.
Technical notes, arc lamp, 1964-1968, incl.
Transmission of Electric Power at 60Hz Using Electron Beams by Preist, 1973 January
Papers written on improved design of inductive output tubes (IOT) and klystrodes by Preist, 1985 April and 1995 March
Patent disclosure by Preist, 1982 December 12
"A High Power Klystrode with Potential of Space Application" by Preist, 1991
Papers co-authored by Preist and Talcott, 1959-1963, incl.
Patents Preist and Talcott held with Eimac, 1966
Research notes, 1973-1981, incl.
Research notes, 1982
Research notes, 1983
Research notes, 1984-1987, incl.
Research notes, 1990-1994, incl.
Technical drawings by Preist, undated
Research notes, undated
More calculations, 1953
Switch Tubes, 1975
Grid filament module, 1975
Calculations, 1976
P.G. Modules, 1979-1980
Klystrode model X2252, 1986
Klystrode General Topics, 1987
Klystrode General Technology, 1988
Klystrode model X2252x, 1987
Philips Cathodes and Th-W Cathodes, 1989
Work for ThermoTrex Corporation, San Diego, 1994
TTC 1994 UWG5 and FAXs
Special tests on klystrodes of interest
Klystrode model X2259, 1988-1989, incl.
Miscellaneous research notes, 1980s-1990s
Series 3. Business Files 1960-2002
Notes and materials on klystrode development history
Notebook, "Eitel-McCullough Book of Ideas", 1935-1946
Eimac inter-office memos, 1951 October and 1957-1960, incl.
Future Prospects for High Power VHF Generator (technical paper) by Priest, 1948
Notes on UHF Circuits for the Eimac Tetrode (technical paper) by Preist, 1949 August
Modulations (AM) with klystrodes, 1953-1956, incl.
Ceramics Dialetrics Materials, 1959-1968; 1990
Eimac engineer reports, 1958
Eimac lab and research reports by Talcott, Ruth, 1951-1954
Eimac research reports and papers by Talcott, Ruth, 1953-1955
Eimac interim report: X582 Klystron Output Activity by Talcott, Ruth, 1959-01-15
Eimac Special Studies Unit Technical Reports by Preist and Talcott, 1959
Heating of Output Windows of Microwave Tubes by Electron Bombardment (technical report) by Preist and Talcott, 1960 August
Eimac: Klystron Engineering Design Manual, 1961 September 27
Eimac reports, 1962
Eimac publications, 1957-1962
Varian Associates Klystron Design Manual, 1961
Varian chronology, 1948-1969, compiled by Oral History Associates, 1989 September 6
Varian inter-office memos between Preist and Herdman, B., 1968-1969
Varian inter-office memos, 1981-1990, incl.
Varian Chalk River Meeting, 1991 August 22
Varian inter-office memos with technical reports, 1982-1983
Varian inter-office memos with technical reports, 1984-1989
Interoffice memo reports by Merrald Shrader, 1988-1991, incl.
Varian research and development management communications, 1967
Varian management communications, 1988 October to 1990 July
Varian management communications, 1990 August to 1991 July
Bill payments for materials for Klystrode X2252, 1986
Notes on finance and research and development, undated
Varian Associates Magazine, 1975
Varian klystrode published data, 1980s to 1990s
Varian annual reports, 1985
Gridded Gun for Klystrodes report by Preist, 1964 September
Research on Microwave Multipactor by Hayes, R. and Preist, 1964 September
Eimac report: Multipactor in Klystrodes, 1964
Eimac report: Development of Metal-Ceramic Arc Lamps [...], 1968
Eimac-Varian technical memo: Improved Gridded High Power [...], 1968
Eimac-Varian technical memo: Design approach for a 10,000 Ampere [...], 1969 July
Eimac-Varian technical memo: [...] Measurement of Particle Size Distribution, 1970 December
Eimac-Varian report: Transmission of Electric Power [...], 1973 January
Eimac-Varian report: Design of Large Gridded Electron Power Tubes [...], 1975 May
Eimac-Varian report: Study of RF Sources for a Proton Linac, 1977 August
Varian Report: Recent Advances in Twystron [...], 1964
Varian report: New Development in Sputter Ion Pump Configurations, 1975 October
Varian report: Gridded Gun Desgn Alternatives [...], 1977 October
Varian report: Tyler Circuit Efficiency Study, 1979 May
Varian report: 10 KW L-Band Amp Tubes [...] by Preist, D. et. al., 1992 January
Varian report: Review of Outgassing results, undated
Communications Transitor Corporation (Varian) technical reports, 1977
Klystrons for Present and Future [...] by McCune, E.W., undated
Biased Gap Klystron Study by Enstoff, Michael, 1964 July
The Constant Efficiency Amplifier, a Progress Report, by Litton Electron Devices Division, 1998
Generator for Producing High Concentrations of Small Ions, 1964
Electron Gun Breakdown presentation by Staprans, Armand. High Voltage Workshop, Monterey, CA, 1985
Preist's research notes on air ions, 1970
Air ions reference materials, 1975
Air ions research, effects on biology
Final Summary Report on Special Electron Bombardment Heater to Operate in Sodium, 1967 February 18
Electron Bombardment Heaters, 1970
Proposal for high Voltage Switch Tubes, 1975
Varian Monthly Activity Reports, 1979-1986, incl.
Gyrotrons, 1977 and 1981
Switch tube calculations, 1984 and 1988
Tube processing, 1987-1991, incl.
Klystron window failures, 1989
Cathode gun testing, 1990-1991
Window calculations, 1990-1992
C.R.N.L. Klystrode test data, 1991-1992
Multipactor calculations and research, 1992
TTC Spares, 1994 May to 1994 June
TTC Spares, 1994 August to 1994 November
IOT and SPICE plans, 1995-1996
Klystrode cavity calculations, 1980-1984, incl.
Notes between Preist and O'Loughlin, Cian on multipactor, 1996
EEV: Klystron crisis, 1995 May
EEV: Electron dynamics in the collectors of Klystrons and IOT's by A.H. Pickering 1997 July
EEV: Research communications with Bohlen, 1992-1993
EEV: Research communications with Crompton and Clayworth, 1994-1996, incl.
EEV: Research communications with Dobbs, Richard, 1994, incl.
EEV: Research communications with Jensen, Morten, 1999
EEV: Research communications with O'Loughlin, C., 1994-1996, incl.
EEV: Research communications with Przbyla, 1997 July
EEV: Research communications with Przbyla on Inductive Output Tubes, 1997
EEV: Research communications with Wilcox, David, 1993-1994
EEV: Research communications with Wilcox, 1994-1998, incl.
EEV: Research communications with Wilcox and Przbyla, 1998
Research communications with "J.S.P.", 1997
Research communications, various, 1994-1996
Research communications with Thermotrex, 1989-1994, incl.
Drawings for resonators, 1994 and 1995
Iotrode gun sketches, calculations, drawings, 1981-1986
Sketches of Experimental Test Vehicle 795, Sapphire Window testing, 1995
Brazing testing readings, 1977
Output readings 1966, 1980, 1990, undated
850 MHz Klystron drawings S-Band II, III, and IV, 1989
UHF-TV Klystrode drawings, 1986-1991
UHF Klystrode drawings, 1986-1991
Drawings for 2KDW250PA, 1990-1992
Polyflon and design concept drawing for IOT by Preist, 1993-1994
IOT drawings by Priest and Gloria Loften (sp.?), 1981 and 1999
"L.N. Cold Trap P 1007" plans, 1960
Frequency output readings, 1956-1958, and 1990; and unidentified drawings, undated
Varian Reference Library copy set drawings, 1989 June
Glass presentation slides: Analysis of Profits for Eimac Tubes, 1953-1964
Series 4. Photographs and Artifacts 1939-1998 1951-1970
Klystron X2251 assembled, 1987
Klystron X2251 parts
Klystron X2251 with engineers, 1982-1983
X2209 anode assembly, 1977
X2209 parts
X2209 switch tube
X2209 HV switch regulator
X2170 assembly with engineers, undated
X2170 assembly
Preist with Shrader and Klystrode, 1980s
SDI tube with Preist and Shrader, 1988
IOT 3-2 and HAEFF tube with Preist, 1981
Eimac and Varian plants, 1959
Eimac staff, 1950s
Eimac Anniversary book photographs
Emmy award party for Don and Merrald, 1989
Varian Associates reunion party, 1990
Vintage Eimac transmitting tubes, 1998
Photographs of Donald Preist, 1939 and 1970s to 1990s, incl.
Eimac San Bruno facility and employees, 1950s
Eimac klystron and engineers, 1950s
Eimac klystrons, 1954-1955
Eimac X600 parts and tests, 1955-1956
Eimac X626 amplifier and engineers, 1957-1958
Micro photos of punctures in Stanford Linear Accelerator window, 1961 April
First gridded gun successful in klystron, 1964
Equipment and employees, 1970s to 1980s
Preist and Shrader, 1970s to 1990
Frequency readings, 1971, 1972, and 1978
Window testing, 1984 and 1985
Input readings, 1988
Polyflon test readings, 1988
Driver and stub tests, 1989 February 3
Klystrode lab, 1991
"Grid of Klystrode which leaked", undated
Output readings, outdated
Color transparencies, radar structures, 1950s
Unidentified and undated photographs
Eimac company logo silver printing plate, 1950s