I did some work for Apple Sauce Book Publishing recently and the workbook is no available for purchase. I did some spot illustrations in Adobe Illustrator for their numbers workbook for preschool to age 6. Here is a link to their website. https://applesaucebooks.weebly.com/
You can purchase the book on Amazon.com and here is a direct link to the Preschool Numbers Work book. It was a learning experience working with the editorial director, Heather Tietz. She is wonderful to work with and she was willing to allow me a great deal of freedom to work on the illustrations. I did some cute black and white vector illustrations of farm animals, and created the logo design. She is an experienced writer and educator for early education.
It's great working with people like that and it makes you feel like you had a hand in creating the final product! I'm looking forward to continue working with Applesauce Books in the future.