The source of the Thalidomide reference is that it is common knowledge to everyone in our age group. The fact that People magazine covered it (which I never saw because I don't read People but get your reference material wherever you choose), is proof of the common knowledge part of it. Although your point about it being very old is not relevant, here are some more recent ones:
1) VALDECOXIB
It was an NSAID pain medication that had been in the market from 2001-2005 but this was recalled by the FDA in 2005 because it was causing adverse heart effects including heart attack, and severe serious skin reactions like epidermal necrolysis and erythema multiforme.
2) PEMOLINE
It was a nerve stimulant drug that was used to treat ADD and ADHD till 2010. It was firstly given a slight warning in 1999, but due to no further improvement, it was finally recalled and now it is among those drugs that are banned in the US.
3) SIBUTRAMINE
It was an appetite suppressant drug that was causing serious heart threats to the patients who used to take it, so it was banned by the FDA reviewer Dr. David Graham in the senate hearing of 2004. Now it is a completely banned drug in the USA by the FDA.
4) TROGLITAZONE
It was used as an antidiabetic and anti-inflammatory drug in the span of 1997-2000 but due to its severe adverse effects on liver and heart lead to lawsuits and ultimately a recall by the FDA.
5) EFALIZUMAB
This chemical drug was used to treat psoriasis but it caused progressive multifocal leukoencephalopathy in many patients who then had to face inflammation and damage to their central nervous system, so it was recalled in 2009
The point which you are so strongly trying to divert from is that medical doctors are not so above reproach that they can start asserting that chiropractic is a scam. In fact, "10 percent of all U.S. deaths are now due to medical error" which is the 3rd leading cause of death in the U.S.
Study Suggests Medical Errors Now Third Leading Cause of Death in the U.S. - 05/03/2016
I know, I know, since it contradicts your point of view, we will discount it as only Johns Hopkins, not a reputable source, just like the National Institute of Health.
My point in this discussion has never been to attack or disrespect doctors. I have great respect for many in the medical profession. My point has been, don't act all high and mighty attacking a profession that has done great medical benefit to many and has killed way less than your profession.
And the whole vibe in the posts from the two (obvious) doctors in this thread totally reinforces the stereotype of arrogant and dismissive, which results in the 3rd highest cause of death.
That is a real shame. So sad as to preclude me throwing a bunch of ROFL emojis in my post to try to make me seem so much better than others.