Inward Correspondence to the Ballarat School of Mines, August 1910letterhead, education department, roland graham, coleraine, m. carew, row brothers, mount gambier, joseph row, r. blackburn, max kohl, wilfred p. avery, jubilee hall, broken hill, frederick e. barclay, pharmacy board victoria, harry shinningham, hobson's gold mining company, macquarie steam brick yards, james dewar, henrey sotheran & co, piccadilly, london, salop, thomas parker, frank tate, dressmaking, steiglitz, telegram, postcard, lahasa fiji, r. palmerf, church of england grammar school of girls, f. abrams, radium hill, welcome gold mine, stanley b. white, new golden gate gold mining company, n.j. wise, h.g. taylor, kout morrien harrow, l.f. fairthorne & sons, h.b. silberberg & co, skipton, henry f. hull, birthday tunnel company, l. hansen, victorian railways, edmund c. earles, lawrence, r. welesteo, wellington cyanide works, clunes, octavius williams, h.j. thwaites, tolarno station, gilbert pa, gilbert palmer, wool sorting, r.j. webster, w.a.t. davies, henry markwald, e. rolland

Set of 13 tuning forks tuned to each semitone of the musical scale, based on C4=256 Hertz (A4=435 Hertz); each with spherical brass knob on end; all enclosed in a hinged wooden case. Wooden clamp for forks included in the box. Performance certificate available. 53.1=box 53.2=wooden forks clamp 53.3-53-15 =13 tuning forks.Engraved plaque inside box: International Stimmunt ut 3-517,304v? 1a 3-870v?; C1-258,652 Schwingungen a1-435 Schwingungen. Inscribed on top of box Max Kohl Chemnitz 1/5 Label on side of box:Tuning forks. On each tuning fork size is identified as MK inscribed.