The adventures of Garth

A package was delivered today. Nothing I ordered, and nothing we expected. Someone ordered this book and memory game with Garth's photos for me, and I have no idea who did it! No note, no name, completely anonymous!
The book looks very cool, and every text I placed with the photos was in it. Someone has done a lot of work! I love it, but I hope I find out who to thank for this amazing gift!