From "A Scanner Darkly," p. 128:

"It used to be mellow here, he thought, everybody kicking back and turning on, grooving to acid rock, especially the Stones. Donna sitting here in her leather jacket and boots, filling caps, Luckman rolling joints and telling about the seminar he planned to give at UCLA in dope-smoking and joint-rolling, and how someday he'd suddenly roll the perfect joint and it would be placed under glass and helium back at Constitution Hall, as part of American history with those other items of similar importance."