NON-PASSENGER SUMMARY 1930-72:
COMMERCIAL 1930-54: 1C - 99999C
C1 - C99999 (Added 1944?, 1947)
1B - 99999B (Added 1950, reported 1949)
B10001 - B99999 (Added 1952 only)
1955-64: 1000-A - 99999-D
1965: 1000-B - 99999-C
B-1000 - C-99999
1966-72: (Quarterly dates, i.e. MAR 67)
DIPLOMAT 1951-54: CD1 - CD999 (1954 verified)
DOCTOR 1934-72: D1 - D99999
FORCES 1941-68: 1F - 99999F (Dated 1941-43, undated 1944?-68)
FOREIGN EMBASSY 1961-72: F1 - F9999 (Reported 1959)
DEALER 1930-72: 1M - 9999M (Dated in 1944, 1952)
TRAILER 1930-65: 1T - 99999T (Dated in 1944, 1952)
T1 - T99999 (Added 1957, reported 1955)
1966-72: (Quarterly dates, i.e. MAR 67)
DUAL PURPOSE 1930-72: 1X - 99999X (Verify 10000X+ 1953-54)
(Station Wagon) X1 - X99999 (Added 1961, reported 1960)
1X1-001 - 9X9-999 (Added 1969)
