Contains a menu for lunch at the Great Eastern Hotel. It also includes the signatures of the attendees. i. Invitation from the President Council and Fellows of the Royal Society of London to the Empire Scientific Conference from 17 June to 8 July 1946. ii. Card with Programme of the Ceremony of the Opening of the Royal Society Empire Scientific Conference at the Senate House of the University of London. iii. Menu card and a seating plan for the Conference Dinner of the X-Ray Analysis Group organised by the Institute of Physics in London. iv. Invitation from The Society of Sigma XI, The Microwave Research Institute, and The Institute of Polymer Research to a lecture delivered by K S Krishnan on "Theory of Electrical Conduction in Metals and Alloys" held at The Polytechnic Institute of Brooklyn. Contains two invitations from the Executive Council of the Indian Society of Agricultural and Animal Husbandry Statistics to the First Annual Meeting of the Society held in New Delhi. Contains an invitation to meet the delegates of the Indian Science Congress on the Muir College Grounds, Allahabad Includes invitations to lectures by Krishnan in India at university. This includes invitations to lectures by Krishnan in India at universities in Mysore, Patna, etc.