Elvis Presley reportedly phoned Nancy Sinatra on the night his daughter Lisa Marie was born in 1968, expressing sadness about inequality facing other children. The recollection, shared by Sinatra in a television interview, presents Presley as concerned about disadvantaged Black children despite the privilege his own daughter would have.

Sinatra and Presley were working together on the film Speedway at the time and remained friends for life. She later described him as both funny and serious, saying he often spoke to her late at night about poverty and people living in ghettos; she has consistently denied rumours that their friendship was an affair.