On the 30th of January, 1863, Mr. McDermott formed a copartnership with John Worthington, who was engaged in the building stone trade at Brownhelm, Lorain county, Ohio, the firm taking the title of Worthington & McDermott. The firm immediately erected works for turning large grindstones for manufactories, and distinguished their first Spring's business by sending to New York city the first cargo of building stone ever shipped there from Ohio. During this year they furnished the stone for all the trimmings and carved work on the Government buildings at Ottawa, the capital of the Dominion of Canada, and also for a number of buildings in Montreal and other cities and towns of Canada. The year's business was heavy, and the result was largely due to the energy and enterprise of Mr. McDermott. In the latter part of the year Mr. McDermott took up his residence in Cleveland, where he had purchased a house, and in the spring of 1864 the office of the firm was removed to Cleveland. The business of the firm was now growing vigorously, the result of the year 1864 being in the highest degree satisfactory, not alone in the pecuniary returns, but in the wider extension of the trade and the introduction of the Ohio stone to markets where it had previously been unknown, and where it has since been in steady and large demand. Near the close of the year the firm of Worthington & McDermott was dissolved, and Mr. McDermott purchased of the Wallaces the old quarry at Berea originally opened by John Baldwin over forty years ago. He took into partnership his brother William and established the firm of J. McDermott & Co. The new firm went actively to work in developing its quarry, mining and manufacturing block and grindstones, and succeeded rapidly in establishing valuable business connections and enlarging the stone trade of this section. Among the first improvements introduced was the building of a railroad track Connecting the quarry with the Cleveland, Columbus and Cincinnati track, and other facilities for the expeditions handling and getting out stone were added as promptly as practicable. In the spring of 1865 the firm filled a contract with the Cleveland and Toledo Railroad Company for stone with which to replace the wooden bridges along the line of the road. During the year the firm made extensive progress in developing its quarry, trenching to a greater depth than had yet been reached in any of the quarries, and obtaining a quality of building stone superior to any produced up to this time in Ohio, which very soon became, and is still, in large demand. In the spring of 1866, the firm sold the first five hundred tons of Berea rock block stone that ever went to New York city, and succeeded in so far interesting several of the largest builders of the metropolis in this stone as to induce them to visit the Berea quarries. During the year 1867, the firm sent to New York all the clear rock block