Penn. 37 C.P.L. 217A
A bill of costs must contain the names of the witnesses, the date of their attendance, the number of miles actually traveled by them, and the place from which mileage is claimed. The bill shall be verified by the affidavit of the party filing it or his agent or attorney that the witnesses named were actually present in court, and that, in the attorney's opinion they were material witnesses. Where the service of a notice to appear, produce, or a subpoena was necessary, to compel the appearance of a witness or the production of evidence, such notice or subpoena, showing the time, place, and cost of service thereof, shall be filed with the bill. Any receipts for disbursements made for necessary exemplification of records, or in taking depositions in the case, or for other costs recoverable by law or rule of court, shall be filed with the bill. A copy of the bill of costs shall be served on opposing counsel pursuant to Pa. R.C.P. No. 440.
Penn. 37 C.P.L. 217A