Green’s Dictionary of Slang

(drugs) a drug cocktail containing LSD, cocaine and heroin.

1969		R.R. Lingeman Drugs from A to Z (1970).
1975		Hardy & Cull Drug Lang. and Lore.
1982		S. King Running Man in Bachman Books (1995) 536: Frisco Push goes for twenty a tab.
2001		ONDCP Street Terms 9: Frisco special — Cocaine, heroin, and LSD; Frisco speedball — Cocaine, heroin, and a dash of LSD.