46 Pa. Stat. § 89
The librarian of the Senate and the resident clerk of the House of Representatives shall receive from the Senators and principal officers of the Senate and the Members and principal officers of the House of Representatives, respectively, the names and post-office addresses of the persons to whom the copies of the Legislative Journal are to be regularly transmitted; and the librarian of the Senate and the resident clerk of the House of Representatives shall transmit said names with the post-office addresses, the name of the Senator, Member, or officer sending the same, to the Superintendent of Public Printing and Binding, who shall cause the same to be printed on wrappers or envelopes, on such paper as may be designated by the Superintendent of Public Printing and Binding, under the contract existing or that may hereafter exist between the Commonwealth of Pennsylvania and the contractor or contractors for the State printing and binding upon the same terms and rates as other State printing.
46 P.S. § 89