Plum, Dorothy, et al. ADIRONDACK BIBLIOGRAPHY. Gabriels: Adirondack Mountain Club, 1958. 354 pp., green cloth. The essential reference for the scholar or Adirondack book collector. Books, pamphlets, and periodical articles published through 1955. Years ago, a customer asked why he needed one, and when I related the incident to my friend and fellow bookseller, Ken Dorn, he smiled and replied, "Why do you need an umbrella when it rains?" Very good.