Wissahickon celebrated its 70th birthday on June 23, 2012 with a picnic at Mingo Creek County Park. Members from Wissahickon Nature Club, Three Rivers Birding Club, the Botanical Society of Western Pennsylvania and the Western PA Mushroom Club all joined to celebrate.
See the four PDF photo albums below.
- A beautiful summer day at Mingo Creek County Park
- Morning Bird Walk: Led by Bob Mulvihill and Bob Machesney
- Delicious lunch: Kielbassa, cake and pot luck side dishes
- Butterflies and Bugs: After lunch an outing in the meadow.