ms132: Autograph letter signed, Alexander Ferrier Mitchell to Professor Peter Redford Scott Lang, concerning textual niceties of the St Andrews University Grace.Gowanpark, 3 August 1896.
ms133: Autograph letter signed, Alexander Campbell Mackenzie to Professor Peter Redford Scott Lang concerning the writing of the music to accompany the St Andrews University Grace.Headed notepaper, 15 Regents Park, London, 7 June 1896.
ms134: Autograph letter signed, Alexander Campbell Mackenzie to Professor Peter Redford Scott Lang concerning the music to accompany the Grace, and his attendance at St Paul's for the funeral of E E Millais RA. Park Farm, Northwood, Rickmansworth, 21 August 1896.
ms131: Autograph postcard signed, Alexander Ferrier Mitchell to Professor Peter Redford Scott Lang, concerning a variant to the University Grace.Brechin, 11 August 1896.