Carnegie Mellon University  http://www.cmu.edu
Carnegie Museum of Natural History  http://www.carnegiemnh.org/
Conservation Consultants, Inc.  http://ccicenter.org
Frick Environmental Center  http://www.city.pittsburgh.pa.us/parks/html/the_frick_center.html
Girl Scouts of Western PA  http://www.girlscouts-wpa.org/
Group Against Smog & Pollution  http://www.gasp-pgh.org
Lake Erie Allegheny Earth Force  http://www.earthforce.org/section/offices/lea/
Nine Mile Run Watershed Association  http://ninemilerun.org
Phipps Conservatory  http://www.phipps.conservatory.org/
RiverQuest  http://www.riverquest.org
Pittsburgh Zoo & PPG Aquarium  http://pittsburghzoo.org
Riverlife Task Force  http://riverlifetaskforce.org
Student Conservation Association  http://thesca.org
Three Rivers Rowing Association  http://www.threeriversrowing.org
Venture Outdoors  http://www.ventureoutdoors.org