It's been a million years since I read "Hopalong Cassidy" but I seem to recall he was older in the books, and somewhat crochety. Or do I remember it all wrong?
(Edit: I sure did have it wrong. I should have checked archive.org before I wrote. Mulford's books are there (Copyright 1913, well within the public domain.) Bill Cassidy is a "youth" who is "not yet of age." Never trust a million-year-old memory.)
Anyway, it's an entertaining story. Winslade's art walks the line between straight and cartoony. The overall effect is pleasing. Interesting to read his Bear Alley bio.
Link to the book:
Thriller Comics Library 055