What has the author George B Joslin written?

It appears you are referring to Elliott Joslin, a physician and author who is considered the "father of diabetes care". He is not known to have written under the name George B Joslin.

Elliott Joslin wrote several books and articles on diabetes, including:

* The Diabetic Patient: A Handbook for the Physician and Nurse (1920)

* Diabetes Mellitus: A Practical Handbook for Practitioners and Students (1923)

* Diabetes and Its Treatment (1937)

* Joslin's Diabetes Mellitus (1959), later editions written by his colleagues and descendants

He also founded the Joslin Diabetes Center in Boston, Massachusetts, which is still a leading center for diabetes research and treatment today.

If you are interested in learning more about Elliott Joslin and his work, you can find information online through the Joslin Diabetes Center website or through general searches for "Elliott Joslin".