Is Koko's Clock Ticking? | STANFORD magazine
Koko - The Gorilla Who Talks | PBS
Koko Dead: Gorilla Used Sign Language, Met Robin Williams - Variety
Remembering Koko, the Beloved Gorilla Who Learned to Communicate via Sign Language - Guideposts
Koko, the famous gorilla who learned sign language, to be laid to rest at animal sanctuary - ABC News
Koko the Gorilla issues a warning to humanity over the dangers of climate change | The Independent | The Independent
Koko the rhyming gorilla and the woman trying to get her pregnant | Television | The Guardian
Koko, gorilla who knew sign language, dies in Santa Cruz Mountains - ABC7 Chicago
Nine of the Best Koko-the-Gorilla Videos | KQED
Koko the Gorilla, Who Used Sign Language and Befriended Mr. Rogers, Dies at 46 - The New York Times
The sad twilight of Koko the gorilla and her 'mother'
Koko the Gorilla's Best Moments: From Sign Language to Meeting Mister Rogers - YouTube
The Legacy of Koko the Gorilla - JSTOR Daily
Gorilla seeks help using sign language
Betty White shares touching tribute to Koko the gorilla | Fox News
Koko - The Gorilla Who Talks | PBS
Koko (gorilla) - Wikipedia
WOODSIDE / Koko talks herself out of a tooth
Koko, Who Learned Sign Language, Love Cats, Dies at 46
