Nancy Tremaine was the first written account of encountering the greys. She also encountered reptilians and human beings. 

Nancy talks about her encounters with non-human-intelligence. She describes what they told her and what their message is for humanity at this time.

Nancy is the author of two books that describe her lifelong encounters

https://www.amazon.com/Books-Nancy-Tremaine/s?rh=n%3A283155%2Cp_27%3ANancy+Tremaine

Grant Cameron links 

https://linktr.ee/whitehouseufo