What year did the first "Where's Waldo?" illustrated book hit the shelves?

"Where's Wally?", published in the United States and Canada as "Where's Waldo?", is the title of the first book in the "Where's Wally?" series, published in 1987. In the book, Wally travels to everyday places, where he sends postcards to the reader (which are the pictures in the book), and the reader must locate Wally in the postcard. The book became an instant best-seller. "Where's Wally?" was re-released in October 1997 in a special 10th anniversary edition form. The location of Wally was changed in each picture and additional characters were added for the reader to find.

Each picture has Waldo hidden in a crowd, and the reader is tasked with locating Waldo in the midst of many other characters. The locations where Waldo was hidden have included a beach, a ski slope, a train station, a museum, and a department store.