Mathematician and electrical engineer (1865-1923) who made major advances in the development of alternating current. The Schenectady Trust Company check, 6.5 x 2.75, filled out and signed by Charles P. Steinmetz, payable to Henry W. Darling for $37, June 19, 1903. Endorsed on the reverse by Darling. In fine condition. Encapsulated in a PSA/DNA authentication holder. Henry William Darling served as the treasurer of General Electric from 1894 until his retirement in 1924.