TD Magazine Article In Memoriam By Pat Galagan 0 Comments Bookmark Main Site Sign in Page Don't have an ATD account? Don't have an ATD account? Forgot your Password? Already an ATD customer without a web account? Institutional subscriber? Click here to sign in. Share Member-Only Content An obituary for Geary A. Rummler, founding partner of Praxis Corp., Rummler-Brache Group, and Performance Design Lab is presented. You've reached ATD member-only content. Sign in below or join ATD to continue. Sign In