Images of Tennant's commission for Bournemouth's telephone exchange Three black and white photographs and a press cutting of Tennant's brick carving 'Mercury' executed on the façade of Bournemouth's telephone exchange. Includes a photograph of Tennant's sketch annotated on the reverse 'Sketch for brick carving carried out for Min[istry] of Works 1956 - Telephone Exchange Bournemouth' (/1). 1956