Matt Stairs | John Penrose | Roger Penrose | William Grant Stairs | Penrose | John Penrose (politician) | Harald Penrose | Beryl Penrose | Spencer Penrose | People Under the Stairs | Lionel Penrose | Boies Penrose | William Machin Stairs | Valerie on the Stairs | Tricia Penrose | The Stairs | Talking Like I'm Falling Down Stairs | Sir Robert Uniacke-Penrose-Fitzgerald, 1st Baronet | R. A. F. Penrose, Jr. | Penrose, New Zealand | Penrose, Colorado | Martin Penrose | Jonathan Penrose | John Penrose (clergyman) | Francis Penrose | Elizabeth Humphreys Penrose | Charles W. Penrose | Charles B. Penrose | Barrie Penrose | A Countess Below Stairs |
Ascending and Descending was influenced by, and is an artistic implementation of, the Penrose stairs, an impossible object; Lionel Penrose had first published his concept in the February 1958 issue of the British Journal of Psychology.