George M. Wyckoff Jr., a two-term mayor of Cumberland who presided over the first, brief introduction of fluoride into his city's water supply, died Friday at Cumberland Memorial Hospital. He was 74, and suffered from multiple organ ailments, his family said.

A native of Buffalo, N.Y., Mr. Wyckoff attended Yale University and moved to Hudson, Ohio, in his late teens to work for his great- uncle, who owned Wyckoff Steel Co. He moved to Cumberland in 1967 with his wife, the former Lucy Benedict Williams, and acquired Cumberland Steel Co.