Sorry that I haven't been able to answer your question before now
Chuck, due need for urgent replacement of computer.
Anyway, I took those photos in 1984, so reckon it must've been Gridley. My fading memory thinks it was Phil rather than Tony, but I could be mistaken after all this time.
dwarfhunter... no, I haven't heard of any operator other than PX acquiring more F-100s. I understand that plans exist to phase out the F-28s by about October and replace them with F-100s. Lots of crews being upgraded to the F-100 and Pixie is busy retraining former F28 crews to facilitate the upgrading of current F28 crews.