Mr. Edgar A. Josselyn, a prominent architect of New York City, had been consulted with reference to plans for the building as had also Prof. Charles R. Richards, then of Pratt Institute, Brooklyn. Architect Josselyn visited Potsdam, May 29, 1895, with roughly drawn plans for the Clarkson School building. His plans, which outlined the present elegant structure, were adopted, and Mr. Josselyn was engaged as architect.

In June, 1895, the construction work upon the plant began. . .

The main building of the School is 87x57 feet, and has two wings, each 180x36 feet. All is built of carefully selected Potsdam red sandstone, finished inside in quartered oak and hard pine, with hard-wood floors. . . All in all the Clarkson Memorial School building and its equipment are justly pronounced by expert judges the most attractive, modern and strictly up-to-date to be found in any technical college of the land with only ten years existence.