420's marijuana link didn't begin with police or legal code

Rumors about 420’s link to cannabis culture often claim the number is legal code for weed. But this April 20th, we explain how the number’s origins are more mundane.
We dig into some popular theories for the numerical nickname. Here's what we found out

Pot Holiday 4/20 Started With 5 California Stoners - CBS Minnesota

National Cannabis Policy Summit, Part 1, April 19, 2019

The Hazy History of '420

Cannabis-related stores are popping up across Virginia amid confusion over the state's marijuana laws - Cardinal News

Pot Holiday Traces Roots to California High School Stoners

Last Prisoner Project - Cannabis Reform Nonprofit

Cannabis Marketing Snapshot: Most Creative 420 Campaigns

Pot smell and safety concerns ignite disputes over public smoking – New Hampshire Bulletin

National Cannabis Policy Summit, Part 1, April 19, 2019

Milan succeeds in 4-month legal battle with marijuana company that didn't get permit

Illegal pot farms have invaded the California desert - Los Angeles Times

Recreational marijuana laws and employee protections