• Armstrong, T. P., Handbook and Reference Manual for Charged Particle Measurement Experiment Data from Explorer 47 and 50, Johns Hopkins University Applied Physics Laboratory, 1976. 
    
• Armstrong, T. P., CPME Data Handbook. 1. Proton-Electron-Telescope Parameters (also called CPME Handbook for IMP 7), Johns Hopkins University Applied Physics Laboratory, 1972.

S1P Documents:

• Cunningham, C., CPME Anti-Coincidence and GM Tube Electronics, Johns Hopkins University Applied Physics Laboratory document S1P-551-70, 1970.
• Peletier, D. P., CPME In-Flight Calibrator Design, Johns Hopkins University Applied Physics Laboratory document S1P-570-70, 1970.
• Cunningham, C., Modification of Rate Limiters and Interface Circuits for CPME, Johns Hopkins University Applied Physics Laboratory document S1P-581-70, 1970.
• Cunningham, C., Channel Logic Revisions for Charged Particle Measurement Experiment, Johns Hopkins University Applied Physics Laboratory document S1P-588-70, 1970.
• Cunningham, C., Modification of Anti-Coincidence Electronics for Charged Particle Measurement Experiment, Johns Hopkins University Applied Physics Laboratory document S1P-589-70, 1970.
• Cashion, R. E., Design Report for the CPME Analog Communator and Noise Monitor, Johns Hopkins University Applied Physics Laboratory document S1P-747-71, 1971. (This S1P document is also incorporated into  the Handbook and Reference Manual for Charged Particle Measurement Experiment Data from Explorer 47 and 50) and includes 4 additional pages (figures).)
• McCutcheon, R. L., Required Items for the IMP-H CPME Experimenter's Tape,, Johns Hopkins University Applied Physics Laboratory document NB1/S1P-757-71, 1971.
• McCutcheon, R. L., Required Items for the IMP-H CPME Experimenter's Tape,, Johns Hopkins University Applied Physics Laboratory document NB3/S1P-757-71, 1971. (Same as above, except there are some handwritten notes and changes.)
• McCutcheon, R. L., Final Tape Format for the IMP-H CPME Experimenter's Tape, Johns Hopkins University Applied Physics Laboratory document S1P-846-71.  
• McCutcheon, R. L., Final Tape Format for the IMP-H CPME Experimenter's Tape, Johns Hopkins University Applied Physics Laboratory document S1P-846-71. (Same as above, except there are handwritten changes throughout.)
• Summary of CPME Prototype Calibrations with α's, p's, and e's at GSFC 3/24, SREL, 3/18 and  NRL 3/30, S1P-750-71. Document is incorporated as part of the CPME Data Handbook. 1. Proton-Electron-Telescope Parameters(also called CPME Handbook for IMP 7).
• McCutcheon, R. L., Revised Tape Format for the IMP-H CPME Experimenter's Tape, Johns Hopkins University Applied Physics Laboratory document S1P-853-72.  (This is an updated version of S1P-846-71 and is incorporated into the Handbook and Reference Manual for Charged Particle Measurement Experiment Data from Explorer 47 and 50--but without most of the handwritten notations.)
• Krimigis, S. M., Possible Improvements of the CPME, Johns Hopkins University Applied Physics Laboratory document S1P-768-71, 1971.
• Armstrong, T. P., Explorer 47 R vs. r, Johns Hopkins University Applied Physics Laboratory document S1P-007-72.
• Hewett, D. W., Program to Evaluate Electron Counting Efficiencies, in-house document, S1P-995-72, Oct. 13, 1972.

Experimenters' and Programmers' Notes and Programmatics

• Correspondence on various IMP issues between the Applied Physics Laboratory and Goddard Space Flight Center, Nov. 1968 to Aug. 1970.
• Krimigis, S. M., Brief description of CPME for Project Development Plan, 1969.
• IMP H and J, experimenter's development notebook, handwritten notes by T. P. Armstrong, 9/26/69 - 5/30/74:
  • Part 1
  • Part 2
  • Part 3
• Cashion, R. E., IMP H, J Experiment Requirements Document, Johns Hopkins University Applied Physics Laboratory, 1970.
  • Part 1 - Organization; Schedule; Experiment Description; Experiment Requirements-General; Electrical Interface
  • Part 2 - Mechanical Interface; GSE; Test Data Requirements; Test Procedures; Other Documentation
• Krimigis, S. M., letter to IMP H and J Project Office at GSFC, regarding the possibility of changing the accumulation of data on one of the IMP data lines, Jan. 16, 1970.
• Viewgraphs for Experiment Design Review, 1970
• Handwritten notes: "Questions for Schmidt" and notes on phone calls
• Summary of GM tube characteristics on Explorers 47 and 50
• Armstrong, T. P., Performance Parameters
• IMP H and J Encoder
• Proton Calibrations of the IMP H and J CPME Package in the 50 to 500 MeV Energy Range - 3 copies, each with different handwritten notes
  • Copy 1
  • Copy 2
  • Copy 3
• Equations used to determine discriminator levels
• Miscellaneous design and experimenter notes:
  • Data labels and positions, 5/27/71
  • Armstrong, T. P., Accelerator use request, July 9, 1970.
  • Catalog of celestial x-ray sources c. 1970
  • Memos, letters, etc.
• Tone Sequential and PCM Decoder Command Allocations, IMP, Revision B, Feb. 1971.
• Letter from APL to Goddard (ref. TTSD-2499), with the following attachments:
  • S1P-757-71, Required Items for the IMP-H CPME Experimenter's Tape (dated 6/16/71). (This S1P document is also available as a standalone document in the above S1P document section.)
  • IPD Milestone Schedule and Experimenter Tape Ground Rules for IMP-H (memo dated Aug. 9, 1971) with 2 attachments:
    • Suggested Experimenter Tape Formats
    • Ground Rules Concerning IMP-H Experimenter Tape
  • IMP-H Real Time Experiment Processing (letter dated 10/20/71 and questionnaire)
  • IMP-H Experimenter Tape Formats (Nov. 11, 1971; 6 page memo from John Schmidt)
  • IMP-H Telemetry Data Tape Format Description
  • Ground Rules Concerning IMP-H Experimenter Tapes
  • Attitude/Orbit/Ephemeris Tape Format
  • Experimenter Tape Format Outline (under relaxed ground rules)
  • S1P-846-71, Final Tape Format for the IMP-H CPME Experimenter's Tape (Dec. 9, 1971). (A second version of this document, with handwritten changes, also exists.  Many of the handwritten changes have been incorporated into S1P-853-72.  All 3 of these are available as standalone documents in the above S1P document section.)
• Nov. 1971 cover letter from J. Schmidt of the U.S. government regarding "Correction to Memo of 11/11/71 - IMP-H Experimenter Tape Formats," with the following attachments (most of which are the same as attachments to the letter above, ref. TTSD-2499):
  • 11/11/71 memo on IMP-H Experimenter Tape Formats
  • IMP-H Experiment Tape Formats (Nov. 11, 1971; 6 page memo from John Schmidt)
  • IMP-H Telemetry Data Tape Format Description
  • Ground Rules Concerning IMP-H Experimenter Tapes
  • Attitude/Orbit/Ephemeris Tape Format
  • Experimenter Tape Format Outline (under relaxed ground rules)
  • IPD Milestone Schedule and Experimenter Tape Ground Rules for IMP-H (Aug. 9, 1971)
  • S1P-768-71, June 24, 1971, memo to Roy Cashion from S. M. Krimigis regarding "Possible improvements of the CPME." (This S1P document is also available as a standalone document in the above S1P document section.)
  • Oct. 20, 1971, letter to S. M. Krimigis from Mary Ann Long of Westinghouse on IMP-H Real Time Experiment Processing
• Cover letter dated June 21, 1971, from APL to NASA/Goddard, with Document S1P-757-71, Required Items for the IMP-H CPME Experimenters Tape, attached. (This S1P document is also available as a standalone document in the above S1P document section.)
• IMP-H Real Time Experiment Processing - letter from Westinghouse Electric Corp. and questionnaire (Oct. 20, 1971)
• Letter dated Nov. 29, 1971, from APL to NASA/Goddard regarding selection of "plan 2" for the CPME, which will operate under relaxed ground rules.
• Tape Format:
  • IMP-H CPME Data Analysis Plans and Experimenter's Tape (correspondence, 1972)
  • Notes and correspondence
• Cover letter dated Dec. 10, 1971, from APL to NASA regarding IMP-H CPME Experimenter's Tape (document S1P-846-71). (This version of the S1P document, also available as a standalone document in the above S1P document section, has handwritten changes throughout.  Document S1P-853-72 is a later version of the same material. Most or all of the corrections by hand in document S1P-846-71 have been incorporated into document S1P-853-72.)
• IMP-H CPME Data Analysis Plans - Aug. 14, 1972, memo to S. M. Krimigis, C. D. Wende, and J. W. Kohl, from T. P. Armstrong and R. L. McCutcheon, with the following attachments:
  • Letter from APL to Goddard Space Flight Center regarding IMP-H CPME Experimenter's Tape
  • S1P-853-72 document, a memo from R. L. McCutcheon on "Revised Tape Format for the IMP-H CPME Experimenter's Tape." Includes Table I - ID Record Format and Table II - Data Record Format. (This S1P document is also available as a standalone document in the above S1P document section.)
• Notes on CPME data plotting (Sept. 1972)
• Armstrong, T. P., Basis of formulas used for spectral and abundance ratio calculations for IMP 7 (H)
  • Part 1 (11/22/72; most pages undated)
  • Part 2 (11/27/72; most pages undated)
  • Part 3 (2/12/74; most pages undated)
  • Part 4 (undated)
• Summary of changes in calibration readings
• Armstrong, T. P., Summary of proposed modifications to IMP J, memo and notes, 1972.
• Letter from APL to NASA/Goddard accepting IMP-H quick-look printout from May 4, 1972, testing.
• IMP-H CPME Archive Tape Format and CPME Archive Identification Record
• Passband plots
• Armstrong, T. P., Notes and calculations (calculation of composition ratios; search for special events; particle or x-ray onsets; rapid spectral variations; how to handle spectral fits; algorithm for computing correct counting rates and uncertainties; etc.)
• Armstrong, T. P., List of time-averaged quantities, 1973.
• Archive tape notes and correspondence
• Master Science Data List (items 1-570); List and Description of IMP-H Master Science File Data Items (items 571-900); other notes
• IMP-8 Merge Data User Information, JHU/APL, March 20, 1998.