Columbia subject headings:
Salinas, Pedro, 1892-1951--Correspondence.
Whitmore, Katherine R.--Correspondence.
Harvard subject headings:
Authors, Spanish--20th century--Correspondence
Salinas, Pedro, 1892-1951--Correspondence.
Whitmore, Katherine Prue Reding, 1897-1982--Correspondence.
Princeton subject headings:
Authors, Spanish--20th century--Correspondence.
Salinas, Pedro, 1892-1951--Correspondencce.
Whitmore, Katherine Prue Reding, 1897-1982--Correspondence.