References
- Online Resources
- 1000 Bit
- Bitsavers.org
- Broadcast Engineering Magazine, American Radio History's archive
- Byte Magazine, American Radio History's archive
- Columbia University Computing History
- Computer History Museum
- Computers in Spaceflight : The NASA Experience
- Computerworld on Google Books
- Digital Computer Newsletter, The BITSAVERS.ORG Documents Library, Internet Archive
- Electronics magazine on AmericanRadioHistory.com
- epocalc
- Grace's Guide to British Industrial History
- IBM Archives
- InfoWorld on Google Books
- Investopedia
- Journal of the Association for Information Systems, The Legacy of LEO, Richard O. Mason, Vol 5 No 4, 2004
- LEO Computers Society
- Medallic Art Collector
- Network World on Google Books
- RCA Review - Radio and Electronics Research - Engineering, American Radio History's archive
- Resurrection, Journal of the Computer Conservation Society
- The New York Times archives
- U.S. Securities and Exchange Commission
- Wikipedia's History of IBM
- Printed references
- Moody's Industrial Manual
- The IBM Century - Creating the IT Revolution, IEEE Computer Society, 2011
- The Pegasus Story - A history of a vintage British computer, Simon Lavington, Science Museum, 1988
- The Stock Exchange Official Year-Book
- Encyclopedia Of Computer Science and Technology, Revised Edition, Harry Henderson, Facts On File, 2009
