"Cocain" by John Martyn
"Cocaine Blues" by Hank Thompson
"LSD" by The Pretty Things (1966)
Note: The "L" was disquised as a pound symbol to avoid any trouble.
"LSD" by John E. Sharpe & the Squires (1966)
Note: I don't think the last song actually says "LSD" anywhere in the song (or perhaps I'm not listening close enough). I'm thinking the title was tagged on to generate controversy (and subsequently sales)