Yes. You must prominently display all licenses in their associated locations, including branches.
Wash. Admin. Code § 208-680-225
Statutory Authority: RCW 43.320.040 and chapter 18.44 RCW (as amended by 2010 c 34). 10-20-124, § 208-680-225, filed 10/5/10, effective 11/5/10.