1) Manuscript notes. 2)Altman & Cherny Pty. Ltd. invites to an opal cutting demonstration. 3) Ross Hamilton Opal's Pty. Ltd. offers a discount on opals and opal jewellery to overseas delegates of the Congress.

1) Invitation to the Opening Ceremony of the Congress in Melbourne. 2) A note about Prof. P.A.Bobillier's coctail-party.

1) Receipt of Australian dollars from A.Ershov (23.10.1980). 2) "Hints for Australian Travellers" by the Australian Department of Foreign Affairs. 3) "Congress Handbook. Melbourne, Australia" (cover).

1) Health Warning for travellers arriving in Australia. 2) Landing Card (the form of Australian immigration service). 3) Boarding Card of Australian Airline for flight from Singapore (13.10.1980). 4) Boarding Card of British airways for flight from Melbourne (18.10.1980).

containing an interview with A.P.Ershov.

regarding mixed computations. Placed by Ershov among various Tokyo materials.

1) An empty envelope with the inscription "Guide for simultaneous translation. For Japanese delegates only". 2) Booklet of the Tokyo "Prince Hotel".

for using simultaneous translation earphones.

1) Handwritten notes on computer technics in Japan. 2) Receipt/claim slip (11.10.1980) testifying that Ershov's knife will be returned to him after the flight Tokyo-Moscow.

on Prof. Zohar Manna.

of Tokyo blocks surrounding the Australian Embassy.

"Dorodnitsyn Ershov arrive October 3rd Aeroflot flight".

"Arrive October 3rd Aeroflot flight".

1) Manuscript notes concerning M.Miyakawa and the term of a lecture. 2) Shopping Discount Directory for Congress attendees.

1) Two messages on the Prince Hotel's forms, regarding current affairs. 2) An envelope with the Commemorative Stamp of the Prince Hotel.

The paper on accepting algorithms is enclosed.

1) Bill of a "Prince Hotel" restaurant. 2) A note indicating Ershov's name and telephone.

1) A manuscript note for own memory. 2) Directors of AFIPS invite A.P.Ershov to a reception. 3) The Management of the Prince Hotel thanks IFIP delegates for staying in the hotel and ask to spare incovenience of congestion by paying the bills in good time.

1) Manuscript list of USSR delegates to the Congress. 2) A technical sketch. 3) Invitation to the Congress Banquet (8.10.1980, Prince Hotel). 4) A suburban train ticket.

1) A manuscript note on current affairs. 2) A card of a Moscow hotel (30.09-2.10.1980). 3) Boarding pass of Aeroflot for flight from Moscow 7.10.1980). 4) A card of the "Prince Hotel" (Tokyo, 5.10.1980). 5) List of telephones of some Congress participants. 6) Ticket for simultaneous translation receiver ("For Japanese delegates only", void form).