This collection consists of seven leather bound portfolios containing topographical drawings, maps, floor plans, notes and papers that the West brothers had created when working in the Maharashtra region of India in the mid to late 1800's. The main focus of the collection is the Kanheri Caves; a group of over 109 rock cut temples located in what is today the Sanjay Gandhi National Park on the western outskirts of Mumbai. The brothers studied these caves over the course of several decades, returning to the site many times to check and amend measurements, locations, and expand open their interpretation of the site. The remainder of the collection covers several other sites such as: Ajanta, Ellora and Daulatabad.

A leather bound folder containing two notebooks titled Kanheri: Caves I to XXI and Kanheri Caves II (caves xxi to xxxviii). There is also a comparative list of the West's account and that of French Indologist A. H. Anequetil Du Perron, as well as four pieces of scrap paper of calculations and shorthand lists.

Descriptions, plans and drawings relating to the excavations in Cave No. 13. These were published in the Journal of the Bombay Branch of the Royal Asiatic Society, 10th October 1861. Included are:

• A draft descriptive paper.
• Plan of Cave 1.3 Drawings of stone pots.
• Drawings of copper coins and sundry found in the stone pots.
• Drawings of clay receptacle containing seal.
• Further drawings of clay receptacles.
• Drawings of 16 fragments.
• Drawings of 9 seals.
• Drawings of 12 seals.
• Lithographs of seals.
• Further drawings of seals.
• Sundry notes.
• Letter from Arthur Anderson West to Edward West, 25 August 1861, checking the date of the find Tracing of the plan of Cave 13.

Descriptions, plans and drawings from some of the Kanheri Topes These were also published in the Journal of the Bombay Branch of the Royal Asiatic Society, 10th October 1861. These are:

• A draft descriptive paper.
• Plan and section of a Structural Tope.
• Unfinished duplicate of plan and section.
• Note of angles and dimensions.
• Plan and elevation of a small tope.
• Plan and elevation of capstone of small tope.
• Drawings of Sculptures of Structural Tope.
• Drawings of stones with inscriptions.
• Tracings of some of the drawings.