"Three Little Bunnies" was published in 1950.
A year later, Rooks was back collaborating with author Ruth Dixon on another children's book featuring photographs of live animals, "Three Little Puppies".
In this book, his wife Sally Rooks is also credited and appears in the book. I don't really know if she worked on the first book and was not given credit, or whether she joined the enterprise, as wife?, collaborator?, sometime in the period between the two publications.
If the information I found previously about his age was correct, he was born in 1920, and would have been thirty or thirty-one when he was collaborating with his wife on these unusual photographs.
It is tempting to project something innocent and bucolic about their artistic process; making the clothes, the sets, working with the pets, coming up with the ideas for each composition, lighting, retakes, even the hand-touched quality of the coloration in the final pictures.
My wife is an amazing artist. Maybe someday we will collaborate on a project? One problem though: I am allergic to cats and dogs and other animals! So we will have to find our OWN path; however we will certainly be inspired by the fantasy we have of Mr. and Mrs. Rooks, and their elysian studio way back in 1950!