Sometime in 1998? I stumbled on an interesting web-site entitled "Arial is not Helvetica" which explained the differences between commonly used Microsoft typefaces and the equivalent typefaces used in professional publishing. At that time I saved the images anh.gif, cnnc.gif and tnrnt.gif from the site, see below.
Since then I have searched for the site but not found it. I did find some references to it, for example [1]:
Jens Kutilek Small typology page proving that Arial is not Helvetica, Courier is not Courier New, and Times-Roman is not Times-New Roman. Email to J.Kutilek@tu-bs.de" "http://www-public.tu-bs.de:8080/~y0007793/type/
However Jens Kutilek's site is no longer available (the URL returns error 404 - not found)
This page preserves the few fragments I have from the original web page. Scroll down to see them.