Spherical Bull:
Mobile at Pittsburgh International Airport
Spherical Bull:
Don and Ling-Mei
Spherical Bull:
Don and Arnold
Spherical Bull:
Circumzenithal Arc
Spherical Bull:
Don, Ling-Mei, and Arnold
Spherical Bull:
Phill in His Lab
Spherical Bull:
A Great Sign for a Lab
Spherical Bull:
Friend at Covenant College
Spherical Bull:
View from Science Building, Covenant College
Spherical Bull:
Friends at Covenant College