The MPAA Film Rating History by JamesMoulton1988 on DeviantArt

File:X rating symbol.png - Wikimedia Commons

What makes a movie X rated? - Quora

File:MPAA X RATING (block).svg - Wikipedia

MOVIE 'SCARFACE' RECEIVES X RATING - The New York Times

Nicole on X: The Best and Worst Rated Episodes of The X-Files

getTV - The movie ratings system began 52 years ago today — Nov 1, 1968. The first ratings were: G — General Audiences M — Mature (became PG) R — Restricted X —

Madden 23 Saints Ratings: Top Players, Bottom Players, and Snubs - Sports Illustrated New Orleans Saints News, Analysis and More

All You Need to Know About IP Ratings - Advice Centre

Tesla Model X is named 'standout performer' in new safety crash tests

The X-Files' Ratings Top 20 Million in 3-Day Viewing