Elvis Presley would have turned 74-years-old today. In honor this legendary birthday, Overlook Press has organized a giveaway of Adam Victor's 600-page tome, The Elvis Encyclopedia.

Elvis fans can enter the contest at the Overlook Press Facebook page, by RSVP-ing at this link or by sending the publisher a Facebook message. Sign-up closes at 5 pm, so register soon.

Here's a sample from the press release: "The Elvis Encyclopedia is also a visual compendium of Elvis' life, offering more than 500 full-color and black and white photographs, ranging from rarely seen candid shots to the iconic images we have come to love ... The distillation of more than six years of research in libraries, film and audio archives, and private collections, The Elvis Encyclopedia surpasses everything that has come before it."