The Drug Classroom:
https://thedrugclassroom.com/video/dom/

DOM History:

Dec 1, 1963
DOM is first synthesized by Alexander Shulgin in 1963 and is first bio-assayed in December of that year.

1967
DOM (STP) first appears on the street in San Francisco, sometimes being confused with LSD and causing problems due to its long duration.

Jan 14, 1967
Human Be-In in San Francisco is attended by 20,000. 5,000 doses of DOM (STP) were distributed for free, unfortunately, they were distributed in approximately 10-15 mg doses, 5-10 times higher than Shulgin had recommended.

Apr 2, 1968
DOM (STP) was placed under DACA control in the United States, making it illegal to possess, sell, or manufacture except for personal use.

Sep 21, 1973
DOM is placed in Schedule I of the CSA in the U.S. making it illegal to buy, sell, or possess.

- https://erowid.org/chemicals/dom/dom_timeline.php

STP:
Slang for the long lasting psychedelic 2,5-dimethoxy-4-methylamphetamine, also known as DOM. STP was said to stand for Serenity, Tranquility, and Peace. Has properties related to LSD. The high comes in at around half an hour after swallowing the tablet and is at peak at 2 to 3 hours depending on the quantity consumed. High can last 14 to 20 hours depending on dosage (14 to 20 according to 3 - 10 mg of STP consumed)

• At 1 mg: Eyes dilated, mouth somewhat dry, and eerie feeling.
• At 2.3 mg: Mood elevation, emotional effects and colors become radiant.
• At 3 mg: Observation enhanced. Brighter and more colors
• At 4 mg: Arousing sensation. Colors intensify and slight hallucinations occur. Effects similar to LSD and Mescaline.
• At 5 mg: Magnification of light, colors, and odors. Slight feeling of unhappiness along with joy. Hallucination occurs but can be stopped at will.
• At 8 mg: Music and visual warp into one being. "An off-beat fantasy."
• At 10 mg: Same as 8 mg, but effects come sooner and lasts a little longer.
• At 12 mg: Tremors, feeling of paralysis with music and visuals binding into an erotic fantasy.

STP:
https://www.urbandictionary.com/define.php?term=s.t.p.&page=2

DOM

Duration: The most popular psychedelic amphetamine due to its pleasant effects, lower potency and shorter duration. Effects have been described as 'sillier' than LSD and related DOX chemicals
Route	Onset	Duration	After Effects
Tripsit Factsheets
DOM Basic Information: http://drugs.tripsit.me/dom
All ROAs:	2-4 hours	8-30 hours	12-24 hours
Avoid: marijuana (Can potentiate effects)
Effects: visual distortions, a 'stoned' feeling, sense of well being.
Detection: DOM is a substituted amphetamine, so it can cause you to test positive for amphetamines 3 to 7 days after dosing.

Its use was short-lived due to its side effects:
Over the years, DOM has gained a reputation for being a highly dose-sensitive psychedelic that is often sold on blotting paper and known for its strong visuals, body load and neutral, analytical headspace. Many reports also indicate that the effects of this chemical may be overly difficult to use for those who are not already experienced with psychedelics.

DOM Summary Sheet:
https://psychonautwiki.org/wiki/DOM

Erowid Experience Vault:
https://erowid.org/experiences/subs/exp_DOM.shtml

Experiences - DOM (STP):
https://drugs-forum.com/threads/dom-stp-2-5-dimethoxy-4-methylamphetamine-experiences.42378/

The Big & Dandy DOM Thread (500 comments):
https://www.bluelight.org/xf/threads/the-big-dandy-dom-thread.291980/

A 1967 Newspaper Article:

STP:
https://www.newspapers.com/clip/39613954/dom-stp-article/

Pihkal DOM Entry:
https://www.erowid.org/library/books_online/pihkal/pihkal068.shtml

2,5-Dimethoxy-4-methylamphetamine Monograph (PDF 5 pages):
http://www.swgdrug.org/Monographs/2,5-dimethoxy-4-methylamphetamine.pdf

DOM Safety Data Sheet (PDF 6 pages):
https://www.caymanchem.com/msdss/11145m.pdf

Effects of this drug include substantial perceptual changes such as blurred vision, multiple images, vibration of objects, visual alterations, distorted shapes, enhancement of details, slowed passage of time, increased sexual drive and pleasure, and increased contrasts. It may cause mystical experiences and changes in consciousness. It may also cause pupillary dilation and a rise in systolic blood pressure.