November 3, 2020 Oregon passed Measure 109, the Psilocybin Program Initiative. 

Colorado, the second state to follow suit. On November 8, 2022, Prop 122 passed and legalizes the following: Psilocybin, Psilocin, DMT, Mescaline (not derived from peyote) and ibogaine. Exact wording of the Colorado law can be found here: Prop 122

2023

• Discovering the Potential Mechanisms of Medicinal Mushrooms Antidepressant Activity: A Review: https://www.mdpi.com/2076-3921/12/3/623
• Psychedelics promote neuroplasticity through the activation of of intracellular 5-ht2a receptors.  https://www.science.org/doi/10.1126/science.adf0435 
• 'Magic mushroom' trial in WA could be the key to treating depression: https://www.abc.net.au/news/2023-02-23/magic-mushroom-clinical-trial-wa-treating-depression/101984640
• Therapeutic Effect of Psilocybin in addiction: A systematic review.  https://www.frontiersin.org/articles/10.3389/fpsyt.2023.1134454/full 
• The Efficacy of Psilocybin in the Treatment of Depression and Anxiety: A Meta-Analysis: https://www.ingentaconnect.com/content/ben/cprr/2023/00000019/00000001/art00012
• Acute Psilocybin enhances cognitive flexibility in rats. https://www.nature.com/articles/s41386-023-01545-z 
• Psychedelics for the Neuropsychiatric Symptoms of Alzheimer's Disease. https://www.sciencedirect.com/science/article/abs/pii/S106474812300026X 
• Single-dose psilocybin for a treatment-resistant episode of major depression: Impact on patient-reported depression severity, anxiety, function, and quality of life: https://www.sciencedirect.com/science/article/abs/pii/S016503272300126X
• Recruitment discrimination of lifetime classic psychedelic users is unjustified: Evidence from employees' motivation-based workplace absenteeism: https://akjournals.com/view/journals/2054/6/3/article-p203.xml
• Psychedelics for Patients With Cancer: A Comprehensive Literature Review: https://journals.sagepub.com/doi/abs/10.1177/10600280221144055
• Single Dose Psilocybin-assisted therapy in major depressive disorder: A placebo-controlled, double blind randomized clinical trial. https://www.sciencedirect.com/science/article/pii/S2589537022005387
• Psychotherapists' Openness to Engage their Patients in Psilocybin-Assisted Therapy for Mental Health Treatment. https://www.sciencedirect.com/science/article/abs/pii/S0165032722014100 
• Are Psychedelics the answer to chronic pain: a review of current literature. https://onlinelibrary.wiley.com/doi/full/10.1111/papr.13203 

2022

• Case report: Raising Awareness: The implementation of medical cannabis and psychedelics used as an adjunct to standard therapy in the treatment of advanced metastatic breast cancer. https://journals.sagepub.com/doi/full/10.1177/20503245221114323 
• Alternative Options for Complex, Recurrent Pain States Using Cannabinoids, Psilocybin and Ketamine: A Narrative Review of Clinical Evidence. https://www.mdpi.com/2035-8377/14/2/35 
• Are Magic Mushrooms Really Magic? Psilocybin in the Treatment of Depression. https://journals.lww.com/psychopharmacology/Citation/2022/11000/Are_Magic_Mushrooms_Really_Magic___Psilocybin_in.1.aspx 
• Psychedelic Experience Dose-Dependently Modulated by Cannabis: Results of a Prospective Online Survey. https://link.springer.com/article/10.1007/s00213-021-05999-1
• MAPS for PTSD: Multidisciplinary Association for Psychedelic Studies https://maps.org/2023/01/05/prior-positive-results-confirmed/ 
• Psilocybin as a Treatment for Psychiatric Illness: A Meta Analysis. https://www.cureus.com/articles/122398-psilocybin-as-a-treatment-for-psychiatric-illness-a-meta-analysis 

2021

• Cannabis-induced oceanic boundlessness. https://journals.sagepub.com/doi/full/10.1177/0269881121997099
• The Therapeutic Potential of Psilocybin. https://www.mdpi.com/1420-3049/26/10/2948
• Exploring the Use of Psilocybin Therapy for Existential Duress: A Qualitative Study of Palliative Care Provider Perceptions. https://www.tandfonline.com/doi/abs/10.1080/02791072.2021.1916659 
• Therapeutic Potential of Psychedelic Drugs, Specifically Magic Mushrooms, Marijuana and MDMA with Veterans Who Suffer from Post-Traumatic Stress Disorder (PTSD). https://openriver.winona.edu/counseloreducationcapstones/155/ 
• Medicinal Psychedelics for Mental Health and Addiction: Advancing research of an Emerging Paradigm. (Australia and New Zealand publication) https://journals.sagepub.com/doi/full/10.1177/0004867421998785 
• Psychedelics and health behavior change https://journals.sagepub.com/doi/full/10.1177/02698811211008554
• Molecular Mechanisms of Psilocybin and Implications for the Treatment of Depression. https://pubmed.ncbi.nlm.nih.gov/34791625/ 
• Psilocybin, a Naturally Occurring Indolamine Compound, Could be Useful to Prevent Suicidal Behaviors. https://www.mdpi.com/1424-8247/14/12/1213 

2020

• Effects of Psilocybin-Assisted Therapy on Major Depressive Disorder: A Randomized Clinical Trial. https://jamanetwork.com/journals/jamapsychiatry/article-abstract/2772630
• Psychedelics and Psychedelic-assisted psychotherapy. https://ajp.psychiatryonline.org/doi/full/10.1176/appi.ajp.2019.19010035 
• The emerging role of psilocybin and MDMA in the treatment of mental illness. https://www.tandfonline.com/doi/abs/10.1080/14737175.2020.1826931?cookieSet=1 
• Micro-dosing psychedelics: Demographics, practices and Psychiatric Co-morbidities. https://journals.sagepub.com/doi/full/10.1177/0269881120908004 
• Perceived Harm, Motivations for Use and Subjective Experiences of Recreational, Psychedelic 'Magic' Mushroom Use. https://journals.sagepub.com/doi/full/10.1177/0269881120936508 
• A Meta-Analysis of Placebo-Controlled Trials of Psychedelic-Assisted Therapy. https://www.tandfonline.com/doi/abs/10.1080/02791072.2020.1769878 
• Psilocybin: from ancient magic to to modern medicine. https://pubmed.ncbi.nlm.nih.gov/32398764/ 

2018

• Psychedelics: Where we are now, why we got here, what we must do. https://www.sciencedirect.com/science/article/pii/S0028390818300753 
• Increased Amygdala responses to emotional faces after Psilocybin for treatment resistant depression. https://www.sciencedirect.com/science/article/pii/S0028390817306391 
• Psychiatry and the psychedelic drugs. Past, Present and Future. https://www.sciencedirect.com/science/article/pii/S002839081730638X 
• The abuse potential of Medical psilocybin according to the 8 factors of the Controlled Substances Act. https://www.sciencedirect.com/science/article/pii/S0028390818302296 

2017

• Clinical potential of psilocybin as a treatment for mental health conditions. https://meridian.allenpress.com/mhc/article/7/1/24/127704/Clinical-potential-of-psilocybin-as-a-treatment
• Metabolism of Psilocybin and Psilocin: Clinical and Forensic Toxicological Relevance. https://www.tandfonline.com/doi/full/10.1080/03602532.2016.1278228?scroll=top&needAccess=true&role=tab 
• Potential therapeutic effects of Psilocybin. https://link.springer.com/article/10.1007/s13311-017-0542-y 

2016

• Psilocybin produces substantial and sustained decreases in depression and anxiety in patients with life-threatening cancer: A Randomized double-blind trial. https://journals.sagepub.com/doi/10.1177/0269881116675513 

2011

• Pilot study of Psilocybin Treatment for anxiety in patients with advanced stage cancers. https://jamanetwork.com/journals/jamapsychiatry/article-abstract/210962 

1997

• Psychedelic Drugs Reconsidered. (A book written by Lester Grinspoon, father to Peter Grinspoon, cannabis clinician.)  https://www.ojp.gov/ncjrs/virtual-library/abstracts/psychedelic-drugs-reconsidered

1957

• Seeking the Magic Mushroom http://www.psychedelic-library.org/lifep2.htm