The collection of proofs is composed of the title page and duplicates of Plates I-XII of Borland's catalogue of the medieval manuscripts of Edinburgh University Library (catalogue available online (external link)).
There is also a covering letter from D. Campbell (T. and A. Constable; University Press) dated and placed at Edinburgh 30 October 1915, to Miss C. R. Borland, 149 Warrender Park Road, Edinburgh, sending her the 'further proofs of the MSS. Catalogue title page, giving effect to the alteration' which she had suggested.
Additionally, there is a title page to the 'Just Published' Epistolare in usum ecclesiae cathedralis Aberdonensis, published by Oliver and Boyd, Tweeddale Court, 1924.