What has the author Henry Cyril Schumacher written?

There is no author named Henry Cyril Schumacher. It's possible you've made a typo or are thinking of a different name.

To help you find the correct author, please provide more information, such as:

* Any other books or works by this author

* The genre of their writing

* The time period they were active

With more details, I can help you identify the correct author.