author
A little-known early 20th-century writer on physical culture, best remembered for a practical guide to tumbling and acrobatics. His surviving work has the feel of a hands-on manual, aimed at teaching movement through simple instruction and drills.

by Henry Walter Worth
Very little biographical information about Henry Walter Worth could be confirmed from reliable online sources during this search. He appears to be known primarily as the author of Ground Tumbling, a short instructional book on acrobatics and physical exercise that was published in the early 1900s.
The book was issued by the American Sports Publishing Company and later circulated widely enough to be preserved by institutions such as the Library of Congress and Project Gutenberg. From the work itself and the way it was cataloged, Worth seems to have written in the practical, straightforward style common to early physical-training manuals, focusing on teaching boys and amateurs how to learn tumbling skills step by step.
Because so little verified personal history is readily available, his legacy today rests less on a documented life story than on this surviving handbook, which offers a small window into the era's enthusiasm for athletics, discipline, and self-improvement.