I began to get lucky searching for other branches of our family so I've put the Hoelke's on hold. Do you think there is any possibility you would be related to this specific branch?
If you're intrested I'll be more than happy to send you what little info I have. I do have a fairly poor xerox copy of a photo showing the front of the Hoelke Hotel, which I can try to make a copy of for you.
Just let me know.