Books like Humphrey the Lost Whale

We got this for our 3 yr old's birthday party this summer and what an awesome book! All my kids love it, my preschoolers and my 5 yr old alike! A story about a lost whale named Humphrey who got stuck in the San Francisco Bay back in 1985, an event I hadn't heard anything about. (I had been ten yrs old at the time) It talks about his migration patterns, how they recognized him year after year, and how the people banded together to get him out of his predicament. At the very end, it has even more information about the event, with real photographs to accompany it and maps of the area with the path Humphrey took on his quest. Something that had all my children engaged as I read, I can see this being one we read over and over again.