BOLLER, Alfred Pancoast, civil engineer, born in Philadelphia, Pennsylvania, 23 February 1840. He was graduated at the University of Pennsylvania in 1858, and at the Rensselaer Polytechnic Institute, Troy, New York, in 1861. He has been connected as assistant engineer with the Lehigh Coal and Navigation Company (1862), Philadelphia and Erie Railroad (1864), and Atlantic and Great Western Railroad (1866); as chief engineer with the Hudson River Railroad (1866), Westside and Yonkers Railroad (1880), Yonkers Rapid Transit Commission (1881), Manhattan Elevated Railroad Company (1882), Albany and Greenbush Bridge Company (1882), and Staten Island Rapid Transit Railroad (1885); and he has held consulting relations with the Zaza railroad in Cuba (1877), Department of Public Parks, New York (1883), and with other corporations. For some years he has been engaged in business as a contractor, and has made a specialty of bridge construction. The double-track bridge over the Hudson River at Albany, the Eighth avenue bridge over the Harlem, the Madison avenue bridge over the same river, the Croton lake bridge, the Central avenue bridge, Newark, New Jersey, the great gas-holder tanks of the Bay State Gas Company, in Boston, the tunnel under the light-house grounds, Staten Island, and all of the locomotive turn-tables on the West Shore Railroad, were built under his supervision. He is a member of the American institutes of civil engineers and mining engineers, and is the author of various reports on bridge construction and of a "Practical Treatise on the Construction of Iron Highway Bridges" (New York, 1877).