The Bearhawk Book is composed of Beartracks newsletters from 1995-2001. As these are original, unedited newsletters, they contain various outdated information and errata, which I’m unofficially annotating below. Please feel free to submit any additional updates or errata in the comments.
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Errata
EAA's Sport Aviation magazine (October, 1995, June, 2001)
EAA's Sport Aviation magazine (October, 1995, July, 2001, August, 2001)
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The Recommended Books and Manuals don’t provide authors, editions, or publication dates. To locate these resources, I reference the below consolidated details and the original EAA catalog pages: How To Books, Jeppesen Specialized Training Manuals, and Tony Bingelis Books. The Jeppesen books are no longer in print and best found on eBay.
Aircraft Inspection and Repair
FAA, Change 1, 2001
ISBN 978-1-61954-021-7, FAA AC 43.13-1B
Aircraft Sheet Metal
Bonacci, 1987
ISBN 0-89100-296-0, Jeppesen JS312633B
Aircraft Welding
Poberezny, Second Printing (Revised), 1999
ISBN 0-940000-49-0, EAA 2251654200000
Custom Built Sport Aircraft Handbook
Poberezny, 1996
ISBN 0-940000-43-1, EAA F13510
Engines, Tony Bingelis on
Bingelis, undated
ISBN none, EAA 2251598500000
Firewall Forward
Bingelis, 2000
ISBN none, EAA 2251603200000
Sportplane Builder, The
Bingelis, 2000
ISBN none, EAA 2251594500000
Sportplane Construction Techniques
Bingelis, 2000
ISBN none, EAA 2251620200000
Synthetic Fabric Coverings
Stis, 1990
ISBN 0-89100-307-X, Jeppesen JS312639B
Errata
Aircraft Welding (F18104)
Aircraft Welding (F37864)AC 43-13B AC Inspection and Repair (F00191)
AC 43.13-1B AC Inspection and Repair (F00191)Sport Plane Builder (F30410)
Sport Plane Builder (F30140)Engines (E15691)
Engines (F15691)
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Errata
the best prices and superb service on 4140 tubing
the best prices and superb service on 4130 tubing
Performance Backcountry 
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