19th century German Toy Soldiers

If have a collection of several hundred J. C. Allgeyer, Johann Haffner, and Ernst Heinrichsen 30 millimeter tin toy soldiers that I am trying to find out more about. Do you know where I can get information? Are there many other collectors of these German toy soldiers? Any help would be appreciated.
Respectfully,
Merlyn Lausten

Have you entered the maker's name plus toy or tin soldiers into a search engine? I found hundreds of leads.

John Tunstill