There is evidence to indicate there could have been a 1948 model year book, and possibly a 1951 book for the Kaiser ONLY but the only model years we can tie up on this are 1949-50 (1950 being same as 1949's books) that include a number of colors and trims that did not make production or were used on cars for a very short period of time.
Unfortunately, in many cases, the books are missing the critical piece of information that was the identification tag indicating color name, number and application (see upcoming article in a future issue of KFOCI MONTHLY BULLETIN) as well as the books I will bring to the 2015 National.