I would also recommend checking out the Alexander Girard book by Todd Oldham and Kiera Coffee:
Its big and expensive but has beautiful photographs and is full of details of his work and life
Folk art inspired dolls originally made for his children, these have been reproduced by Vitra
I love his use of color, texture, and line. The book really illustrates his love of juxtaposing unexpected colors and shapes. His work translates so well to our modern aesthetic sometimes it's hard to believe his work is mid-century and his graphic work was absolutely genius! If you are looking for a little inspiration, Alexander Girard is someone to check out!