Frederick Clapp of Frick Museum [obituary]
MLA
Frederick Clapp of Frick Museum [Obituary]. The New York Times, 1969. https://collections.library.yale.edu/catalog/2055472.
APA, 6th edition
Frederick Clapp of Frick Museum [obituary]. (1969). [Obituaries, Photocopies]. The New York Times. https://collections.library.yale.edu/catalog/2055472.