with addresses, phone numbers, to-do- and do-not-forget lists

about the visit of A.P. Ershov to the United Kingdom as a guest of the British Computer Society

of A.P. Ershov's visit to the UK with his handwritten notes

for Ershov visit

Address of MacCallum family with Ershov's notes made after the visit

for Ershov visit

handwritten notes, and a business card

Plane ticket, receipt stub, customs certificate for importing 8 pounds