Ok, by young children I don't mean baby, I mean like 4 or 5ish that are fun read alouds that play on letters. Like we bought Rylee a book the other week called Princess Pigtoria and the Pea.. it's a modern, funny version of the Princess and the Pea and the letter P is very prominate throughout the book. I would love to find other books like it that are fun and focus on a specific letter to help Reagan, he just isn't grasping the alphabet like like I would like him too (even though we are pretty much unschooling our way through pre-k, I would love for him to have this just click like it did for Ry). Any ideas?
Word Bird Little [Letter] Books (ie Little P and a P box in which every item in the box begins with P) are the first two series that come to mind. You should consider if he is a whole-to-part learner. Meaning he will connect words to thoughts before he can have an "ah-ha" moment with letters and sounding out words. Just a thought...