Maffet, D. (1829). Acts of Assembly relative to the Board of Wardens, of the port of Philadelphia, and regulation of pilots and pilotages: Also, rules and regulations of the Board, relative to owners, masters and others, having the command, care or charge, of ships or vessels within the port or harbour of Philadelphia or River Schuylkill. Philadelphia [Pa.]: R. Desilver.

Maffet, David. Acts of Assembly Relative to the Board of Wardens, of the Port of Philadelphia, and Regulation of Pilots and Pilotages: Also, Rules and Regulations of the Board, Relative to Owners, Masters and Others, Having the Command, Care or Charge, of Ships or Vessels Within the Port or Harbour of Philadelphia or River Schuylkill. Philadelphia [Pa.]: R. Desilver, 1829.

Maffet, David. Acts of Assembly Relative to the Board of Wardens, of the Port of Philadelphia, and Regulation of Pilots and Pilotages: Also, Rules and Regulations of the Board, Relative to Owners, Masters and Others, Having the Command, Care or Charge, of Ships or Vessels Within the Port or Harbour of Philadelphia or River Schuylkill. Philadelphia [Pa.]: R. Desilver, 1829.