(1892). Price list of engineering, mining and surveying instruments manufactured by Young & Sons, inventors and introducers of engineers transit: Including an account of invention and introduction of engineer's transit ([14th ed.].). Philadelphia: Loag, printer.

Price List of Engineering, Mining and Surveying Instruments Manufactured By Young & Sons, Inventors and Introducers of Engineers Transit: Including an Account of Invention and Introduction of Engineer's Transit. [14th ed.]. Philadelphia: Loag, printer, 1892.

Price List of Engineering, Mining and Surveying Instruments Manufactured By Young & Sons, Inventors and Introducers of Engineers Transit: Including an Account of Invention and Introduction of Engineer's Transit. [14th ed.]. Philadelphia: Loag, printer, 1892.