Locally
The Book Barn
3051 S White Mountain Rd
Show Low, AZ
(928) 537-2166
They keep a nice stock of basic scouting supplies in stock
If you can't find what you are looking for there try these out of town Scout Shops:
Either the
Phoenix Scout Shop
1-602-224-0778
or the
Flagstaff Scout Shop
928-774-7335
Both locations have stores you can shop in if you're in the area. The Phoenix Store is significantly larger. Both offer quick service!