A Circular 3 — Line drawing for event poster — with Pedro Cid Proença — Photo: Mark Blower

A Circular 3 — Cover with line drawing before printing the colours — with Pedro Cid Proença — Photo: Mark Blower

A Circular 3 — Fill in colours being printed by Xavier Antin — with Pedro Cid Proença — Photo: Mark Blower

A Circular 3 — Fill in colours being printed by Xavier Antin — with Pedro Cid Proença — Photo: Mark Blower

A Circular 3 — Cover variations — with Pedro Cid Proença — Photo: Mark Blower

A Circular 3 — Front and back cover — with Pedro Cid Proença

A Circular 3 — Front cover with original drawing inside — with Pedro Cid Proença

A Circular 3 — Cover detail — with Pedro Cid Proença