Credits and Acknowledgements

This project was a massive undertaking. Several years of research, acquisition, data collecting, and content formatting were involved in getting this to the finish line. There were abundant numbers of people involved, from specific contributions to general help. While it is not possible to list everyone, the following people deserve recognition for their assistance:

A very special thank you to Wayne Plumtree, forensics specialist with the Los Angeles County Sheriff's Department. His collaboration was invaluable, his motivation was encouraging, and his research and lead generation were top-notch. I can honestly say I couldn't have done it without him.

Tim Paterson, the original programmer who wrote the disk operating system. Thanks for being available, for reviewing some of our material, for making corrections to the historic recounting of you and your experiences, and submitting back the changes.

Barry A. Feigenbaum, Ph. D., Worldwide Accessibility Center, IBM®. Dr. Feigenbaum provided excellent first-person accounts about the development of PC-DOS, and was particularly helpful resolving PC-DOS 4.x release mysteries.

Ian Marks, IBM® Corporation - leads on version histories and details; product announcement and data sheets; vintage system information.

The Wish Team, Microsoft® Corporation - version release dates; FTP product technical support; research leads. Credit for giving me product information otherwise lost to the ages.

Chet Mackentire, one of the early engineers who worked with developing the 8088, for providing documentation on CP/M-86 and recounting topical stories from the era.

Timo Salmi, Vaasa, Finland, moderator of comp.archives.msdos.announce

Thanks to Eric Engelmann, vintage software dealer - providing early IBM DOS® releases. His portfolio was just what we needed to fill some gaps in rare acquisitions.

Ralf Brown, Carnegie Mellon University, PA.

Steve Shepard, references about MITS and Ed Roberts; historical information about the company and the system developments.

Herbert Johnson, for providing excellent specimens of early Z-DOS and offering information about CP/M and the S-100 data bus.

Howard McCorkle, Baypoint, California.
Bob Bourne, Australia.
Daniel B. Sedory, California.
Tod Brannan, Programmer, Berkeley, California.
Richard Brocaw, Arvada, Colorado.
Roman Eisenhut, Austria.
Maurica Pannell, Forest, Virginia.
Sal Morris, Brownsburg, Indiana.
Pat Williams, Gravel Switch, Kentucky.
Drew Finnie, Toronto, Ontario, Canada.
Marni Staudenmaier, Redmond, Washington.

Several collectors/sellers worthy of honorable mention:
Mark Forman, Craig Ignowski, James F. Rorie, Jr., Craig Autrey, Larry Schwartz, David Brownell, Albert Aloisio, Tim McEntire, Eric Shelby, Robert Embury, and Lyle Gabbidon.

To everyone here, and those that contributed but remain unnamed, I am extremely grateful for your participation and help. Thank you.

Brian Hardy, Project Curator