Gary Dahl, Inventor of the Pet Rock, Dies at 78 - The New York Times

Television This Week - The New York Times

Phyllis Albrecht, former president of Lake Bluff, dies – Orlando Sentinel

Pet Rock – Wikipédia

IRC: #techrights @ FreeNode: July 23rd, 2017 – July 29th, 2017

Final goodbyes: A look at the notable deaths from 2015

88 New Inventions and Ideas that Made Millions of Dollars for Inventors

Pet Rock Creator Gary Dahl Dies

Luminaries we lost this year

Pet Rock, pet games switch

Maureen O'Hara, spirited movie star, dies at 95 – Hartford Courant

GARY DAHL, O PUBLICITÁRIO FALIDO QUE TRANSFORMOU PEDRA EM OURO