Forgot to mention I'm using Office 2003.
I think I figured this out but it still pretty klugy & non intuitive method
So, it looks like logo appeared in the return address box (in the envelope &
Labels Dialog) & you have to click "omit" above return address or Word
prints the stuff I put into "EnvelopeExtra1" (Autotext) in addition to
what's showing in the Return Address box.
Dumb but true.
So if I click omit return address (such as you would if you had preprinted
envelopes) I'll always get the Logo I saved as "EnvelopeExtra1" in Autotext.
I guess I just have to not click omit & leave it blank for that.
Is there another solution?