Born in Germany about on March 3, 1879, immigrated in 1903. Married to Margaret. Employed as a chemist at Kodak in Rochester.

Lange was a dealer in Rochester, New York, DBA The Hobby Shop. He conducted 18 auctions from 1927 to 1930 including the ANA convention sales of 1928 and 1930. He was honored by the RNA with their annual medal for 1926. In 1928 the ANA established an Inquiry Department. Lange who at the time was ANA librarian and curator was appointed as head of the Inquiry Department. He resigned in 1931.

He died in Rochester, New York, on February 19, 1949.