All matters relating to the registration of standardbred horses, unless otherwise provided for herein, shall be governed by the Rules of the United States Trotting Association. Pennsylvania stallions, in order to be eligible for Pennsylvania Sire Stakes for any given year, shall have on file a Stallion Certificate of Eligibility no later than December 1 of the preceding year with the Pennsylvania State Harness Racing Commission and a Stallion-Jack License Application with the Pennsylvania Department of Agriculture.
58 Pa. Code § 183.1
This section cited in 58 Pa. Code § 181.1 (relating to definitions).