For sale here is a William Mills & Son catalog from 1916. Excellent condition. 64 pages.
Among the other rods marketed at the time, this catalog features the "1915 Model" Dry Fly Rod and the "Enz" Pattern Dry Fly Rod.
Also featured in addition to the Leonard Bimetal reel and the William Mills & Son "Fairy" reels, there is an entry for the "Special Aluminum Fairy Reel".