with congratulations from the Cybernetics Section of the Leningrad House of Scientists. (With a hand-written Ershov's explanatory remark addressed to his mother.)

"Grounds for necessity and desirability of celebrating Ershov's birthday anniversary".

made with alphanumerical printer: large "50" made of A.P. Ershov's initials.

"Za nauku v Sibiri" with the article "Informatics - the cause of life" about Ershov.

from the Department of Progranmming and Problem Solving of the Ukrainian Institute of Cybernetics. (With a hand-written Ershov's explanatory remark addressed to his mother.)

from the laboratory of optimal data processing of the Computing Center. (With a hand-written Ershov's explanatory remark addressed to his mother.)

from the Ukrainian Institute of Cybernetics. (With a hand-written Ershov's explanatory remark addressed to his mother.)

from the Computing Center administration. (With a hand-written Ershov's explanatory remark addressed to his mother.)

from the Institute of Mathematics of the Belorussian Academy of Sciences.

from the Research Institute of Computers (Minsk). (With a hand-written Ershov's explanatory remark addressed to his mother.)

from the Institute of Theoretical and Applied Mechanics. (With a hand-written Ershov's explanatory remark addressed to his mother.)

from the Novosibirsk Branch of the Institute of Precise Mechanics and Computer Thchnology. (With a hand-written Ershov's explanatory remark addressed to his mother.)

with a versified congratulation from M.Nemenman and N.Shkut. (With a hand-written Ershov's explanatory remark addressed to his mother.)

with congratulations from former "Siberians" working at the System Programming Design Office in Gomel. (With a hand-written Ershov's explanatory remark addressed to his mother.)

with congratulations from "Pravda" publishers. (With a hand-written Ershov's explanatory remark addressed to his mother.)

with congratulations from Jan Barzdin. (With a hand-written Ershov's explanatory remark addressed to his mother.)

"On rewarding the Appl-Math of the Old and New Siberia A.P.Ershov". (With a hand-written Ershov's explanatory remark addressed to his mother.)

of the article "On the 50th birthday anniversary of the corresponding member of the USSR Academy of Sciences A.P. Ershov". (With a hand-written Ershov's marginal explanatory remark addressed to his mother.)

with congratulations from a group of Erevan programmers. (With a hand-written Ershov's explanatory remark addressed to his mother.)

with congratulations from R.I.Podlovchenko. (With a short hand-written Ershov's explanatory remark addressed to his mother.)