It's not entirely known if Paul Manafort and Roger Stone met with Phyllis Schlafly as depicted here. Nevertheless, showrunner Dahvi Waller wanted to include the scene to show how the events of 1980 paved the way for the Trump administration of 2016-2020.
The closing credits tell us that Phyllis Schlafly's last book was "The Conservative Case for Donald Trump". She died just two months before Donald Trump was elected President in 2016.
This is the only episode in the series to be named after a man.
The closing shot of the series of Phyllis sitting in the kitchen is clearly a reference to the 1975 French Film "Jeanne Dielman, 23, qui du Commerce,1080 Bruxelles" about a lonely and widowed housewife. The shot duplicates one of the most well-known stills of Jeanne peeling potatoes.