British School 18th century
A Man with a Portfolio, Taking Snuff. Verso: Beginning of a Girl’s Head
Naum Gabo, ‘Cover Design for a Portfolio of Prints’ c.1975
Naum Gabo
Cover Design for a Portfolio of Prints c.1975
The Work of Naum Gabo © Nina & Graham Williams / Tate, London 2021
Henry Moore OM, CH, ‘[portfolio folder]’ 1973
Henry Moore OM, CH
[portfolio folder] 1973
© The Henry Moore Foundation. All Rights Reserved

Sometimes they will be considered as a set or series of images. The term portfolio also applies to the physical folder in which such series may be stored or held.