What has the author Heinrich J Rechtmann written?

There is no known author by the name of Heinrich J Rechtmann. It's possible that:

* The name is misspelled. Could you double-check the spelling?

* The author's full name is different. Perhaps you only know part of their name.

* The author is not well-known. It's possible the author is not widely published or has a different name they use for their writing.

If you can provide more information about the author or their work, I might be able to help you find what they have written.