This was my first book. It's an alphabet book where each letter has a shadow-picture associated with it. You can find it on Amazon or on the Nook store.

 

Springtime in my backyard is my second book (and third.. it's a series). It's a guessing game where you see two pictures from one plant, and one picture from a secon plant and guess which doesn't belong. I used to play a similar game in Highlights magazine as a child. You can the books on Amazon or on the Nook store (here's a link to the Amazon in the series, and on Nook).