Ask the librarian at the co-op. The librarian at my sons school recommended Horrible Harry in room 2b. It was not as thick as I expected. It was read in one sitting like a picture book. I am really very happy with a stack of Little Golden Books my grandmother gave my son. They are at a really good reading level, in that I can catch a few mistakes or sometimes he'll ask for the next word. The stories are short so I have him read three times a week. The pictures are great, and the print is small and compact like in most other books. That's good because he used to skip lines some. He would start reading a sentence from one line and then skip to the next line by accident. Practicing reading fine print with these books fixed that. There is a wide variety of stories, so it's something new every time. There's great pictures.
If you have kindle or a kindle app My Father's Dragon
http://www.amazon.com/gp/aw/d/B004TRQESM/ref=redir_mdp_mobile?qid=1333020506&ref_=sr_1_14&sr=8-14I have the book, so I have read it to my kids. Someone posted that free link to download My Father's Dragon and my son has began reading it a few pages at a time. It's beyond his reach. He asks me for words. I think that with it being really beyond what he can read he would not have tried it if he was looking at a page full of print, but on a tiny screen he reads a few more pages whenever we're stuck waiting somewhere. He's doing good.
I have a kindle full of childrens books ready and waiting. Peter and Wendy, Treasure Island, The Wind in The Willows, Black Beauty, Alice's Adventures in Wonderland, The Adventures of Huckleberry Finn Tom Sawyers Comrade.
I know that these are books they'll need to grow into, but I bring them up because they are free online and so I put them on my kindle. I'm partially through reading Peter and Wendy to the kids. I like to sit on the porch and read to them while they play in the yard, only a few pages each sitting. Sometimes they don't pay attention, sometimes they get into the story. Sometimes we talk about parts of it.