Yes, I'm been aware for a long time of the double nn spelling in the William's City Directory.It's my strong conviction that this spelling was a transcription ERROR.I envision that this info was collected by the survey person who walked door to door - not a glamorous job, the pay was low, and the quality control wasn't very high.Through the years, I've seen plenty of misspellings and downright erroneous info in the Directory for many family members.
I also know that another non-Waitzman member of our (your and my) family deliberately falsified her age by 10 years, but the directory surveyor duly recorded it as true.That casts a lot of doubt about its veracity.I would also guess that, with daily quotas to meet, the surveyors wouldn't hesitate to gather info from neighbors if the residents weren't home - that's only my speculation.
Which brings us back to the spelling of Waitzman.Years ago, I asked my mother if she ever heard about the double n spelling, or another alternative spelling that drops the T -She said she had not, and considered it simply wrong.
I obtained a photocopy of Joseph W's citizenship paper from ther library - it has one single n - and John probably was directly involved in the process of drawing the document up.
If you encounter anything else that corroborates the double n spelling, I'd love to know about it.