Harley-Davidson p/n 99444-93 is still available at your local H-D dealer, or on-line at Harley-Davidson. Their Antique Literature selection includes this 1958-1966 American-Made Lightweights.
This book includes a 1966 Parts Catalog and a 1966 Service Manual.
The Colors / Options / Accessories section lists some information that's not available anywhere else. Did you know — the March 1960 "Spring Special" offered a reversed White and Hi-Fi Red color scheme? A must-have for the serious restorer!