Here are some kick-ass websites to help you find a script, screenplay, teleplay, pilot, etc.
Writers Guild of America & Writers Guild Foundation
101 Greatest Screenplays of All Time
101 Greatest Screenplays of the 21st Century (*so far)
101 Funniest Screenplays
Writers Guild Foundation Library
You can read scripts there to see how they are formatted. You can search online or call ahead to see if they have it before you drive down there.
Writers Guild Foundation Blog
Actual scripts with breakdowns to check out if you’re speccing something:
Arc Studio Pro:
Best screenplays to read in every genre
Jericho Writers
30 screenplays for every screenwriter to read
Movies Scripts and Screenplays
Screencraft
65 TV pilots that Screenwriters should read
TV Writing
If all else fails, do an ISO (In Search Of) on Tracking-Board.com or another tracking board.
Even Reddit might be a good spot in a pinch.