CA Cannabis Exhibit: Ancient History Cannabis Display Source Links 

[1] source: https://hightimes.com/culture/the-tale-of-the-hippie-trail/

[2] source: https://thedamacollective.com/gallery/cannabis-center-of-origin.pdf

[3] source: https://thedamacollective.com/gallery/cannabis-center-of-origin.pdf

[4] source: https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7605027

[5] https://www.jstor.org/stable/48704486

[6] source https://www.researchgate.net/publication/266083497_High_Points_An_Historical_Geography_of_Cannabis

[7] source for origins of smoking: https://www.science.org/doi/10.1126/sciadv.aaw1391

[8] source for cannabis dissemination in Africa: https://journals.openedition.org/echogeo/17599