This series contains handwritten and typed notes on archaic Manipuri by William Pettigrew and a draft of a monograph on the same written by Pettigrew's collaborator Yumjao Singh.

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.

Copies of documents written in Meetei Mayak Script, the ancient script of the Manipur region. These include:

• Copy of Ningthou Phambal-lon
• Copy of Manuscript labelled 'or 11715'
• Copy of manuscript labelled 'Paorou Eesei'
• Copy of 'Chainarol. (p.109-123.) (meaning of Meetei words)'
• Copies of two further manuscripts.
• Partial copies of manuscripts, Pambhoikei Khoangkron, and Cheitharel Kurobaba; newspaper articles from Huiyan Lampao and Sangai Express; and original statement in Manipur vs Kanykipon..

Copies of manuscripts in Bengali script. These include:

• Copy of 'Kang, Its Rule and Origin' by KH Tolhal Singh, published by the Manipur State (Khwai) Kang Union, 1962.
• Copy of manuscript 'Old Manipuri Literature Text Book'.
• Five loose sheets of printed script with some annotations
• Printed booklet 'With the Compliments of The Manipuri Sahitya Parishad'
• Printed booklet of 'Worship of Fovoibi' by Nq. Kulachamba
• Copies of documents, one labelled 'Tikinaha jit memorial'
  *Copies of Akham Langol documents
• 'Chronicles Bengali Script' - Copies of Chronicles of the Kings of Manipur with some annotations.
• Notebook containing 'Miyad (hand copied by N. Khelachandra. Bengali Script)'.
• Notebook containing 'Sanamali Laihul'
• Copies of 'Pamheiba Larei Lathup (secrets on Pamheiba) Hand copied by Tomba Metei (Bengali Script)', two versions, one handwritten and one photocopied
• Documents entitled Pamheiba vagyoebandra; Angai Fammang; Khuman Chronicle; Luwang Chronicle; Angom Chronicle; Angom Low; Notes on Khuman Chronicles; [Gambhin Sigh genealogy??]; Bamon khunkhoklon; Moinang lambaba, handwritten
• Copies of various Manuscripts in Manipuri - not identified, with some English annotations also photocopied.
• Copy of Leisernlow Creation story
• Proof copies of a printed manuscript, uncut

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.