Yep. They were done all the time before safe abortion was legal--coat hanger, etc. But I still think this is a bit of conjecture on your part.
Coat hanger? Please. I sincerely doubt that a coat hanger was used often if at all. It would be a silly and painful way of doing the job and would lead to some serious medical complication for the woman.
There are a number of ways of inducing a miscarriage; a good half will leave no trace of anything besides possibly poor judgment.
As for "safe" abortion there is no such animal.
a.cricket