These documents are provided for historical and research purposes. Producing, distributing, or using controlled substances is illegal and carries significant health risks. If you or someone you know is struggling with substance use, you can find resources and support through WebMD's addiction treatment guide .

The following resources provide access to digitized versions of texts related to this subject:

: Written by David Lee, this is a comprehensive historical reference text available for borrowing or digital streaming at the Internet Archive.

: Also by David Lee, this manual focuses on historical methods used in the 1970s to assess drug purity and is free to download in various formats.

: Authored by Adam Gottlieb, this text is part of a series of vintage drug-related manuals available for digital viewing .