It shall be also lawful for the said chief engineer and surveyor to procure from the office of the clerk of quarter sessions of the county of Philadelphia, all detached plans of streets, roads and plots of any part of said city, and cause to be copied such other as may be parts of the records of said office, as he may designate to be necessary and useful in the said department of surveys; and the said chief engineer and surveyor shall also cause to be copied the records which may show when the streets and roads of said city were opened, and the courses and the widths thereof.
53 P.S. § 16394