XA (70 of 8689 recorded)

1972
J | J - A | S - O | N - D
1973
J - F | M - A | M - J | J - A | S - O

XB (128 of 9733 recorded)

1973
S - O | N - D
1974
J - F | M - A | M - J | J - A | S - O | N - D
1975
J - F | M - A | M - J | J - A | S - O | N - D
1976
J - F | M - A | M

XC (36 of 2262 recorded)

1976
A | M - J | J - A | S - O | N - D
1977
J - F | M - A | M - J | J - A | S - O | N - D
1978
J - F | M - A | M - J | J - A | S

Landau (19 of 1385 recorded)

1973
M - J | J - A | S - O | N - D
1974
J - F | M - A | M - J | J - A | S - O | N - D
1975
J - F | M - A | M - J | J - A | S - O | N - D
1976
J

Superbird (11 of 750 recorded)

John Goss (17 of 700 recorded)

Cobra (4 of 400 recorded)