Hello Marcia:
I thought about your question for awhile (intriguing).
Anyway, something you might try.
Go to your home folder ~library>safari. Highlight the history plist. Restore it from a TM backup that predates your visit. For good measure (although I do no know what it does, I would restore a file called historyindex.sk.
That may or may not work, but it is worth a shot.
As always, be sure you have a backup before you do anything that is software-related.
Barry