Building Warrant: erection of new telephone exchange at 27 - 35 Bon Accord Street (floor plans, elevations and sections) Applicant: National Telephone Company Limited Architect: Leonard Stokes, 2 Great Smith Street, Westminster, SW Date of decision: approved 4 July 1907 Remarks: register entry 7601 (7 sheets, ink and colour wash on tracing cloth) [Modern address: check valuation rolls] 4 July 1907