I assume I'm probably the last guy to know about this.
But, just in case I'm not, & somebody else might get some use out of it, this appears to be pdf versions of '58 thru '69 NHRA rule books.
https://www.dropbox.com/sh/2006u57wp...myEgvaR8KYSowa
Sure would like to find access to lots of old ND papers, to get nat record info & race results from.