46 Pa. Stat. § 121
Each member and the principal officers and employes of the Legislature shall also be entitled to receive the stationery, supplies and equipment necessary for their official use, also such printed or engraved official stationery as may be necessary for the conduct of their offices; and to carry out this provision, the chief clerks of the respective Houses are hereby authorized, when requested in writing so to do from a Senator, Member, or principal officer, of the Legislature, to requisition the Department of Property and Supplies for the official stationery herein authorized, properly printed or engraved, in such quantities as he may deem necessary. The chief clerks of each respective branch of the Legislature shall also have the authority to order such official stationery, properly printed or engraved, from the Department of Property and Supplies, as may be necessary for the use of the employes and committees of each House.
46 P.S. § 121