Lesley Blanch was a talented artist. Her portfolio circa 1923–35 came to light in January 2014. It contains seventy theatre designs, book illustrations, caricature-portraits, artwork for wall panels, and whimsical line drawings of animals. Some are originals and some black-and-white photographs of her work.
- A History of Piracy by Phillip Gosse 1932 | Book Illustration © Estate of Lesley Blanch
- Dr Gosse in the Pearl Room 1932 | Gin and Eno's at 8 a.m. Signed. Sold at auction © Estate of Lesley Blanch
- Abdication Grab 1936 | Series of painted playing cards. Spoof on the romance of the King and Mrs Simpson. Signed. Sold at auction © Estate of Lesley Blanch
- Inside Buckingham Palace (ext) 1936 | Folding cabinet with a bird's eye view of vignettes of life at the Palace. Watercolour. Signed. Sold at auction © Estate of Lesley Blanch
- Inside Buckingham Palace (int) 1936 | Watercolour. Signed lower right on the Palace doors. Sold at auction © Estate of Lesley Blanch
- The Coronation 1937 | Watercolour. Signed. Sold at auction © Estate of Lesley Blanch
- Royal Visit to France July 1938 | Our Sailor King. Watercolour. Signed. Sold at auction © Estate of Lesley Blanch
- In the Waiting Room 1938 | Watercolour. Signed. Sold at auction © Estate of Lesley Blanch
- Just Like You or Me 1938 | Watercolour. Signed. Sold at auction © Estate of Lesley Blanch
- A Souvenir of the Royal Visit 1937 | Watercolour. Tailpiece. Signed. Sold at auction © Estate of Lesley Blanch
- Couturiana 1937 © Estate of Lesley Blanch
- Come into the Garden, Cook 1942 | Book cover for Constance Spry, J. M. Dent | Lesley Blanch archive, Beinecke Library, Yale University, USA. © Estate of Lesley Blanch
- John Dryden, Songs and Poems 1957 | Book illustration. Golden Cockerel Press | Lesley Blanch archive, Beinecke Library, Yale University, USA © Estate of Lesley Blanch
- John Dryden, Songs and Poems 1957 | Book illustration. Golden Cockerel Press | Lesley Blanch archive, Beinecke Library, Yale University, USA © Estate of Lesley Blanch
- For Violet Trefusis | Needlepoint cushion. Private collection © Estate of Lesley Blanch
- Dome of the Rock, Temple Mount, Old City of Jerusalem | Needlepoint cushion. Literary executor’s personal collection © Estate of Lesley Blanch
- Tea for two on the river Nile | Needlepoint cushion, memento for ‘Darling Self’ | Literary executor’s personal collection © Estate of Lesley Blanch
- The Wilder Shores of Love New York 1954 | Christmas card by Lesley Blanch © Georgia de Chamberet
- Lady L for Romain Gary 1958 | Book cover. Michael Joseph, London, 1959 | Lesley Blanch archive, Beinecke Library, Yale University, USA © Estate of Lesley Blanch