Editing Gramps and Grizzly (section)

== References ==

# [https://paintball.media/louis-gramps-grubb-1939-2015/ John Amodea, "Louis (Gramps) Grubb 1939–2015", Paintball Media, 27 June 2015].
# [https://trademarks.justia.com/738/06/gramps-grizzly-paintball-guns-originators-of-constant-air-73806094.html United States trademark registration 1,643,080, "Gramps & Grizzly Paintball Guns Originators of Constant Air", filed 12 June 1989, registered 30 April 1991].
# [https://www.vintagerex.com/bluebook/ VintageRex, "MCB Paintball Blue Book", listing the Gramps and Grizzly KBS Eliminator].
# [https://www.vintagerex.com/cgi-bin/index.cgi?action=viewdb&man=Combat+Connection VintageRex, "Combat Connection", historical manufacturer catalogue and Enforcer equipment records].
# [https://warpig.com/paintball/technical/gasses/antisiphon/ Bill Mills, "Siphons and Anti-Siphons: Dealing With Liquid CO₂", WARPIG, March 2006].
# [https://viewer.joomag.com/paintball-media-magazine-february-2021-february-2021/0277600001612196005/p24 Paintball Media, February 2021, p. 24, retrospective on early paintball equipment innovators].
# [https://www.mcarterbrown.com/pda/Paintball%20Planet/Paintball%20Planet%20December%201991.pdf Paintball Planet, December 1991, paintball industry directory listing Gramps & Grizzly in Riverside, California].
# [https://mcarterbrown.com/pda/Paintball%20Trader/Paintball%20Trader%20June%201992.pdf The Paintball Trader, June 1992, p. 18, interview with Gramps as co-owner of Gramps and Grizzly].
# [https://offsite.firepro84.com/joseph/airsmith_guide.pdf The Airsmith Survival Guide, technical resource and directory listing Gramps & Grizzly].
# [https://warpig.com/paintball/tournament/vegas99/index.shtml WARPIG, "Las Vegas NPPL 1999", contemporary reporting on Gramps and Grizzly's distribution of Max Attack compressed-air systems].