This assortment includes:

1978: Feb

1981: Jan, Feb, Apr, Aug, Sept, Oct, Nov, & Dec

1982: Jan, Feb, Apr, May, Jun, Jul

1986: Sept

1987: Nov

1988: Aug, Sept, Oct, Nov, Dec

1989: Jan

1990: Jan

1991: Jan, Feb, Mar, Apr, May, Jun, Jul, Dec

1992: Jan Feb, Mar, Apr, May, Jun, Jul, Aug, Sept, Oct, Nov

1993: Jan, Feb, Mar, Apr, May

$15.00 for the entire lot (I'll throw in a couple extras as well) -- Media mail shipping should be in the $6 range.