This report, by the American Embassy in Moscow, is about the death of Jerome Posner (Esther's father).
Jerome and Sonia were travelling to the Soviet Union. Sonia had taken a trip there in 1933, but this was Jerome's first trip there since emigrating with Sonia from Belarus (when it was still part of the Russian Empire). But sadly, Jerome died (from heart disease) on the way there.
The place of death is given as "Soviet Aeroflot flight from Copenhagen to Moscow."
Jerome's date of birth is listed as March 14, 1886.
The report makes reference to a Soviet death certificate which describes the cause of death as "General arteriosclerosis. Cardiosclerosis."
It says "The investigation at the scene of the death was personally attended by the responsible consular officer and by Dr. D.C. Martin, the American Embassy physician. The Embassy doctor was also in attendance at the autopsy on June 13, 1960."
Next to "Disposition of the remains" it says "Cremated in Moscow and disposed of by wife."
It says that since Jerome and Sonia had been travelling on the same passport, "the passport was amended to exclude him and the passport was returned to his wife."
The report refers to Sonia as "Mrs. Sophie Posner"—presumably this was the name used on the passport.
Jerome and Sonia's address is listed as 1322 Brook St., Lawrence, Kansas. (See this address today in Google Maps.)
The report includes the name and address of Jerome's sister in Russia: B.A. Dobrushina, Apt. 4, 27 Dzherzhinski Street, Stavropol, USSR. Perhaps this is the sibling named Bassya listed in a 1998 Rosenthal-Posner family tree.
Google Maps shows a street called Dzherzhinskogo in present-day Stavropol—might this be the same street as "Dzherzhinski"?? (See 27 Dzherzhinskogo in Google Maps.)
The report indicates that copies were to be sent to Sonia (here called Sophie), to Jerome's children Beatrice, Esther, and Sidney, and to Jerome's brother Samuel Posner.
Information about this document, copied from ancestry.ca:
Reports of Deaths of American Citizens Abroad, 1835-1974
Name: Jerome Posner
Date of Birth: abt 1886
Date of Death: 11 Jun 1960
Age at Death: 74