The register lists certificates issued by the Surveyor and the Street Commissioner for services performed by contractors, apparently indicating acceptance of the work by the city. Each entry includes the certificate number, date, name of the certifying officer, name of the contractor, a statement of the work performed, a reference to the resolution or ordinance authorizing the work, the period of time for which the payment is being made, the basis for payment, and the amount to be paid. This register appears to have been maintained jointly by the chairmen of the two Committees on Streets and Landings. The remainder of this volume was used to record the minutes of the Bureau of Streets and Landings from June 2, 1862 through June 30, 1863.