The 2001 Annual, Volume 1: Training, and Volume 2

The Encyclopedia of group activities

Starve the Beast

Roadkill on the information highway

The 1999 Annual (Pfeiffer Annual: Consulting)

Pfeiffer Library CD-Rom

Pfeiffer & Company Library, of Experimental Learning Activities

Pfeiffer & Company Library, of Presentation and Discussion Resources

The Encyclopedia of Team Activities Set, The Encyclopedia of Team-Development Activities, Volume 1 (Loose-Leaf Package) (605)

The Encyclopedia of Team-Building Activities

The 1989 Annual