“Patterns” is available commercially in VHS video format. I just checked www.amazon.com and they list it for $13.99. The script was published by Simon and Schuster in 1957 – “Patterns: Four Television Plays with the Author’s Personal Commentaries” and EBay is one place where you might find a copy.
Here’s a “greatest hits” list from The Rod Serling Resource Site. I would add to it the PH90 In the Presence of Mine Enemies.