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This technical drawing details the construction of a wooden hinged boat.Plans corrected by William B. Spengler assistant engineer, and approved by E. H. Shipman canal superintendent. Full date: December 7, 1909.

This schematic shows the detail plan of a ratchet wheel for a gate lifting device. The material of construction is cast iron. The drawing shows the dimensions of the finished work. Drawing corrected by assistant engineer William B. Spengler and corrected by canal superintendent E. H. Shipman. The full date of this drawing is February 4, 1910.

This schematic shows the detail plan of the coupling for a shaft & stem, 26" wicket. The material of construction is cast iron. The drawing shows dimensions of the finished work. It belongs to the Engineering Division of the Canal Department of the Lehigh Coal and Navigation Company. Drawing corrected by assistant engineer William B. Spengler and corrected by canal superintendent E. H. Shipman. The full date of this drawing is February 2, 1910.

This technical drawing details the encroachment of the Thomas Iron Company on pool number 6 owned by the Lehigh Coal and Navigation Company. The full date of this technical drawing is June 13, 1911.

This schematic shows a lock gate with detailed assembly instructions.

This schematic shows the detail plan of the lever and connections for a reverse mechanism of an engine at launch "Josiah White." It belonged to the Engineering Division of the Canal Department of the Lehigh Coal and Navigation Company. The full date of this drawing is March 2, 1910.

This item is one of several technical drawings detailing the construction of lock number 47, including item numbers 7303 to 7305. Full date of drawing: March 9, 1912.

Full date: February 20, 1909. No signatures present on drawing for correction by Assistant Engineer or approval by Canal Supervisor.

This map shows a plan of Bethlehem made from surveys by Jacob Dillinger and John C. Brickenstein. It is a lithographic copy produced by J. Probst in Philadelphia, Pa. It was authored by Abraham Hübener and drawn by P. Jarrett in 1841.

This schematic shows the details of a canal boat and its forging. The material of construction is wrought iron. The drawing shows the details of a bow fender, stern iron, shoe iron and bumper iron. It belonged to the Engineering Division of the Canal Department of the Lehigh Coal and Navigation Company. This drawing was corrected by assistant engineer William B. Spengler and approved by canal superintendent E. H. Shipman.

This schematic shows the detail plan of elevation block for supporting a third rail by the Engineering Division of the Coal Department of the Lehigh Coal and Navigation Company. The material used is yellow pine. The full date of this drawing is January 25, 1910.

Leaf contains a table indicating both distances from Mauch Chunk to various locations along the Lehigh River and the price of tolls at these locations depending on cargo. The article has several notes and corrections written in ink, as well as several names written at the top of the leaf.

This map shows the Philadelphia Water Supply Company's proposed aqueduct lines to supply the city of Philadelphia with 250 million gallons per day of filtered water from the Delaware River by gravity and steam pumping.

This schematic shows the standard detail plan of a bearing box, 40 inch wicket. The material of construction is cast iron. The drawing shows dimensions of the finished work. It belonged to the Engineering Division of the Canal Department of the Lehigh Coal and Navigation Company. Drawing corrected by assistant engineer William B. Spengler and corrected by canal superintendent E. H. Shipman. The full date of this drawing is January 26, 1910.

This item is one of several technical drawings detailing the construction of pieces of a 100-ton wooden hinged boat, including items 358 and 359. No signature is present for correction by assistant engineer. No signature is present for approval by canal superintendent. Full date of drawing: August 16, 1909.

This technical drawing details the assembly of a rack and pinion single stem gate lift device. Corrected by assistant engineer William B. Spengler and approved by canal superintendent E. H. Shipman. Full date of technical drawing: November 14, 1911

This map shows South Easton with building lots and prices. On the left side of the map are notes listing the unsold lots in Easton and their prices.

This large map shows a map of the Borough & Township of Mauch Chunk including plans of Nesquehoning, Summit Hill, the borough of Tamaqua, and the coal works of the Lehigh Coal & Navigation Company. Included in the top left corner of the map are two manuscript illustrations depicting the Mansion House of George Esser and the Superintendent's residence.

This blueprint map shows the lands in the Nesquehoning Valley to be sold by the Panther Valley Water Company to the Lehigh Coal and Navigation Company. This map is traced from White Print Plan Number A-3908 from file of Engineer M. W. by G. E. Handwerk, April 24, 1919, Office of Assistant Engineer, Allentown, Pa.

Full date of technical drawing: December 18, 1907. This schematic shows the details for a wooden section canal boat. Marked obsolete, March 1908, in red pen beneath title.

This technical drawing details the construction of the construction of a reinforced concrete lock. Full date of technical drawing: February 6, 1911.

Full date of drawing: February 20, 1909.

This schematic shows a map of the Pine Forest lock and dam at a final estimate of $2869.78.

Full date of drawing: November 26, 1909.