Typed manuscript titled 'A Study made of 133 words in 29 different dialects to compare to the Archaic and Modern Manipuri', with handwritten annotations on the front page: 'by Rev W Pettigrew late of Manipur State Assam India' and 'Preparatory to a paper proposed to write on the Archaic Manipuri language'. The manuscript has been formatted into a table which has the modern Manipuri dialect on the left and the archaic dialect on the right.

In Mrs Pettigrew's letter dated 26 May 1943, the typescript is described as 'evidently based on the Comparative Vocabulary of Grierson's Linguistic Survey' and was prepared for a paper for some journals.

Handwritten manuscript titled 'The Original Notes' on archaic Manipuri, taken by William Pettigrew chiefly at Harvard Library and the British Museum. Annotations are made on some pages in modern and archaic Manipuri.

Stored with the manuscript are two items:

• Letter from Roland B. Dixon (1875-1934), Harvard University, giving updates on the progress of William Pettigrew's research on archaic Manipuri inscriptions, dated 8 June 1929
• 'Rules and Regulations of The Asiatic Society of Bengal', printed by The Baptist Mission Press at Calcutta 1929, signed on the cover 'WP 27/3/39' [Pettigrew was elected Associate Member of the society in 1939]

Typed notes entitled 'Research Work on Archaic Manipuri of the Native State of Manipur, Assam', being a typewritten copy of WP/1/3 prepared by Mrs Pettigrew in 1935, with bibliography and appendices.

Examination papers taken by William Pettigrew to test proficiency in Manipuri language and Hindustani tribal culture and accompanied by a note from the examiner congratulating William Pettigrew for passing the exam.

Examination papers handwritten by William Pettigrew answering questions in regards to proficiency in Manipuri language with annotations from the examiner, marks received 82 out of 100, total of 19 pages and a letter addressed to William Pettigrew congratulating him on passing the exam.

Typed manuscript of exam papers titled 'General Questions' with handwritten annotations, total of 4 pages.

A green pattern cover book handwritten and titled 'Langlol and Notes on same' and a handwritten poem copied from King Lear, Act 2 Scene 4, William Shakespeare.

A green pattern cover notebook handwritten possibly in Sanskrit, the title on the first page reads 'Langlol and Notes on same'. It has annotations in English and the content is possibly related to a dialect from Manipur, India.

This series contains correspondence regarding Yumjao Singh's monograph and the donation of Pettigrew papers.

The papers of Lieutenant Chalmers consist of two hardbound volumes of handwritten text, being the 'Akbar Nameh of Abul Fazl Allami' translated by him. The Akbar Nameh ('History of Akbar' or 'Book of Akbar') was the official history of Akbar's reign, commissioned by Akbar and written by his court historian and biographer Abul Fazl in Persian. Chalmers's translation is an abridged version of the original text.

Volume I has the following additional items pasted into it:

• a letter from Henry Beveridge to Miss Latimer, Assistant Librarian at the Royal Asiatic Society, returning Chalmers's translations which the Library has lent to him and saying it is a pity that his translation is little known, dated 21 February 1923
• two sheets of notes signed G. O. [Gore Ouseley], commenting on the translation
• two slips recording borrowing of the volumes by two readers in 1877, 1880 and 1885

Volume II has the following additional items pasted or inserted into it:

• a note stating that this book has been entered in the Society’s catalogue in September 1877
• a small slip of paper containing an extract from the volume and further notes by an unidentified author. This was found in the Society's Institutional records in 2024 and was therefore inserted into the volume
• a letter from J. C. Morris, Secretary to the Madras Literary Society, to the Secretary of the Oriental Translation Committee, requesting to submit Chalmers’s two volumes of translation. The letter goes on to state although the translation is not accompanied by the original as required by the rules of the committee, Mr Lushington (English Tory Politician and Governor of Madras from 1827-1832) will on application provide the loan of the original work in his possession from which Chalmers's translation was prepared. Dated 30 May 1833.
• a pressed fern on page 157