There is a list of cars designated as "Classic" by the Classic Car Club of America, all the following Chrysler Imperials are listed (and one or two lesser Chryslers!)
1926 -1930 - Imperial 80, 1929 Imperial L
1931 -1937 - Imperial Series CG, CH, CL, and CW
Newports and Thunderbolts
1934 - CX
1935 - C-3
1936 - C-11
1937 - 1948 - Custom Imperial, Crown Imperial Series
C-15, C-20, C-24, C-27, C-33, C-37, C-40