Rebecca,
The records I have don't have a birthplace (city) for either Wilhelm or Wilhelmina. However, I do have her brother's Declaration of Intention, which gives his birthplace as Gr. Holstein Germany. I have not located the city yet, but it may have changed names. There is a couple of books that you can research to find the old city names, but I have not had the chance to do it yet. I have copies of the family tree from two different sources, but their accuracy has not been verified. I will gladly send you a copy of everything I have. Send your address to my e-mail (sanderson@ika.net), and I will get it out to you. I would also like to get a copy of everything you have, including the photos. If you could have actual photographic copies made (at K-Mart or similar) and let me know the cost, I will send you money for them.
Scott