Regarding your question about Yasoda and Devaki...

Expressions researched:
"Regarding your question about Yasoda and Devaki"

1969 Correspondence

This is all explained in detail in our Krishna book. Devaki is the actual mother of Lord Krishna, but because Devaki's brother, King Kamsa, wanted to kill Krishna because of the omen that he had heard that Krishna would one day kill him, Vasudeva, Krishna's actual father, brought Baby Krishna to Vrindaban to the care of Yasoda and Nanda Maharaja, who acted as Krishna's foster parents.

Letter to Yasodanandana -- Tittenhurst 15 September, 1969:

Regarding your question about Yasoda and Devaki, this is all explained in detail in our Krishna book. Devaki is the actual mother of Lord Krishna, but because Devaki's brother, King Kamsa, wanted to kill Krishna because of the omen that he had heard that Krishna would one day kill him, Vasudeva, Krishna's actual father, brought Baby Krishna to Vrindaban to the care of Yasoda and Nanda Maharaja, who acted as Krishna's foster parents.