Part 97 FCC Rules

Official Title 47 (Telecommunications) Part 97 (Amateur Radio Service) 

on e-CFR US Government website

https://www.ecfr.gov/cgi-bin/text-idx?c=ecfr&SID=336ab7469b61ecbfa15086dbf1bf2c59&rgn=div5&view=text&node=47:5.0.1.1.6&idno=47#47:5.0.1.1.6.1.157.1

FCC Part 97 Rules on NCVEC website

http://www.ncvec.org/page.php?id=320