Lot of two APBA Rule Books (American Power Boat Association).

1976 - This book is in overall very good condition.  Minor staining on the covers.  Bottom tips of a few pages are missing.  Pages are very clean.

1978 - Staining and minor damage on the covers.  Discoloration inside both front and back covers (darker yellow).  Inside pages are very clean, yellowed with age.

Great information on vintage racing, names of people involved, rules, etc.

You are getting both books.