Ok here is another place that claims they have F96PGs for sale.
May be they do, may be they don't.
But for those members that are still looking for some I thought I would post it anyway.

http://www.jandslighting.com/index.php?main_page=index&cPath=21_33

Also.....

http://www.ebay.com/itm/GE-Power-Groove-Lamp-Bulb-F72PG17-CW-NOS-VINTAGE-ANTIQUE-LIGHTING-F72PG17-CW-7PC/201091319184?_trksid=p2047675.c100011.m1850&_trkparms=aid%3D222007%26algo%3DSIC.MBE%26ao%3D1%26asc%3D22698%26meid%3D7417723267384400892%26pid%3D100011%26prg%3D9176%26rk%3D2%26rkt%3D10%26sd%3D111358804602

Also....

http://www.ebay.com/itm/F48PG17CWGE-Fluorescent-Lamp-110-Watt-48-inch-/290393798356?pt=LH_DefaultDomain_0&hash=item439cd1b6d4