Gregory in the Pool E (Paper Pool 4) is a vibrant work by David Hockney that captures the shimmering, fragmented qualities of water and the human form submerged within it. Created using Tyler Graphics Ltd.'s innovative hand-made colored paper pulp technique, the work is one of 20 variants, reflecting Hockney's exploratory approach to the medium. Signed with initials and dated in white ink on the front, with the annotation '4-E' in pencil on the reverse, this piece exemplifies Hockney's enduring fascination with the play of light and movement in swimming pools.