Dave ran an ad in early Cryonics small format magazine 1990- "Live and work with other cryonicists" that I responded to in 1991. I worked with Mark Plus and Derek Ryan, both cryonicists, at Talwiwi Lodge near Alpine AZ in 1991. Later I worked at Dave's Mountainview Lodge in 1992. Then at his Auto Upholstery Shop here in Pheonix in 1998. In 2002, I did some work at Creekside Preserve aka Ventureville. I toured N.Scottsdale sites and locations with him when Alcor was looking for an Arizona location to move out of Riverside around 1993. While doing auto upholstery, we tried learning how to do commodity trading.