The work Mayfair: (Untitled) Four Signs for Joe Birch attests to Robert MacPherson's deep interest in a serial poetry of repetition, with its four simple and similar panels, only varying in the single word at the bottom of each. There is a logic of animation here, a group of related images to be read in sequence, perhaps from the window of a car moving along the highway and designed to get attention by the small differences between them. If this were a poem, presented as text only, it would need four lines to provide the pause between each fragment - while in the sign at the roadside, or here in Macpherson's painting the separate boards provide that necessary pause and emphasize the beat within the rep...