The Adventurous Four - Dean & Son 1972:First edition: 1972
Publisher: Dean
Illustrator: Uncredited
Category: Dean's Reward Series
Genre: Mystery/Adventure
Type: Short Story Series Books
VIEW THE INTERNALS HERE:
https://imgur.com/a/7fLhjRX" onclick="window.open(this.href);return false;
The Adventurous Four Again - Dean & Son 1973:First edition: 1973
Publisher: Dean
Illustrator: Uncredited
Category: Dean's Reward Series
Genre: Mystery/Adventure
Type: Short Story Series Books
VIEW THE INTERNALS HERE:
https://imgur.com/a/zCngfBH" onclick="window.open(this.href);return false;
These are the versions of the books and illustrations I was brought up on in the early 1970's. I've always had a soft spot for them.
Only problem was my mum bought the books out of correct order, so even now when I have a re-read I start with Adventurous Four again first.
Although the illustrator is not credited, I think he/she did a good job for the time period the books were produced?