Federal register online only goes back to 1995, sigh.
http://www.access.gpo.gov/su_docs/aces/aces140.htmlSome of the more important
class exemptions are online from the Pension and Welfare Benefit Administration (of the DOL) at
http://www.dol.gov/dol/pwba/public/programs/oed/oed.htm#listbut 79-1 doesn't seem to be included.
PWBA doesn't appear to make any special online publication of individual prohibited transaction exemptions (which are published in the Federal Register, in both proposed and final form).
[This message has been edited by Dave Baker (edited 01-07-99).]