Simmons, Roger Edwin. [from old catalog] · Harrisburg, Pa., W. S. Ray, state printer · leaf 103
^ Fig. 13.—Racing shell being built by a Pennsylvania manufacturer for the Univer-sity of Pennsjlvania. f^ :-,i - =i … Fig. 14.—Manufacture of mine sprags in Xortbern Pennsylvania.
Woodwork · Lumber trade · Forests and forestry
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