There was still Mexican brick weed in the la area as recently as 7-8 years ago when I last lived there.
like 20 bucks an ounce, tons of seeds and red string for some reason. Rock hard, had to chisel pieces off and then soon as the flame hit the bowl it would expand to 4x the size.
we would occasionally buy some as kids but had to get it from a friends parents. Only the older people seemed to know where to get it.
La was like the opposite of the Midwest, everybody had super strong weed and you had to look around or get lucky to find the brick stuff.