Chuck Schermerhorn 
Where Is Martha’s Hair? [EPUB ebook] 

Little Bonnie starts to notice that her best friend, Martha, is absent from school a lot and not answering the phone. When she goes to see her, her hair is falling out and everyone ignores her questions. Martha shares that she is sick and has "cancer". She wasn’t quite sure what that is, but she knows she feels bad. Little Bonnie knows she must ask her new friend, Monty. Monty shares a perspective on cancer which is Biblically based and allows kids to understand a little more of what to do or expect.