The Beach Boys in a Billboard advertisement circa  1971
Author unknown
<a rel="nofollow" class="external text" href="https://books.google.com/books?id=hQ8EAAAAMBAJ&amp;pg=PA48&amp;dq=the+beach+boys+billboard&amp;hl=en&amp;sa=X&amp;ved=2ahUKEwjqubqQoKP0AhVSVc0KHUORD3k4KBDoAXoECAQQAg#v=onepage&amp;q=the%20beach%20boys%20billboard&amp;f=false">Billboard Magazine p.48</a>