Berenstain Bears by Stan and Jan Berenstain-http://www.berenstainbears.com/
Clifford the Big Red Dog
Don't Let the Pigeon Drive the Bus (or any other Pigeon books, Mrs. Mason's favorites!) by Mo Willems-http://www.pigeonpresents.com/pals.aspx
Nursery Rhymes
Brown Bear, Brown Bear What Do You See? by Bill Martin, Jr.
There's a Wocket in My Pocket by Dr. Seuss- http://www.seussville.com/
Stellaluna by Janell Cannon-http://www.storylineonline.net/
Froggy by Jonathan London-
Who's That Knocking on Christmas Eve by Jan Brett-http://www.janbrett.com/index.html
The Mitten (or anything!) by Jan Brett
Franklin by Paulette Bourgeois
The Very Hungry Caterpillar by Eric Carle-
The Gingerbread Man and other fairy tales-
If You Give a Mouse a Cookie (and all the If You Give books) by Laura Numeroff-http://lauranumeroff.com/
The Little Engine That Could by Watty Piper
David Goes to School by David Shannon