David Alt

Alt was the author of more than thirty books, including several titles in the Roadside Geology series published by Mountain Press.^[2][3][4]

He earned his Ph.D. in 1961 from the University of Texas, and joined the Department of Geology at The University of Montana in Missoula, Montana in 1965.^[5] He became professor Emeritus at The University of Montana in 2002.^[5]

He died on April 26, 2015, in Missoula.^[6]

Alt helped to interpret and explain to a wide audience the cataclysmic glacial Missoula Floods through articles and his book Glacial Lake Missoula and Its Humongous Floods (Mountain Press, 2001. ISBN 978-0878424153).^[7][8][9]