I posess something very similiar with translations to German
that I bought in a Music shop 1969 in Oldenburg in Oldenburg.

The author is one E L Swerkoff and the German editor is August Scholtz

Musik Verlag Wilhelm Zimmermann Frankfurt am Main

50 Russische Volkslieder fuer Gesang und Klavier.

They have published 47 other books in Russian/German in a Series
called Beliebte Russische Zigeunerromanzen. Gipsyromances

The russian is in the old spelling like my Mother learned and as soon as possible again forgot at school

This publication has given me quite a lot of pleasure during the years
strumming the melodies with Guitar.

This collection has been collected after the revolution by the
emigrants who had to leave Russia and they took with them the old spelling. Die Sammlung ist in schwerer Zeit in nichtrussischen "Ausland" entstanden. The collection has appeared in a difficult time in the nonrussian Foreign Country.

Schwerkov was the dirigent of the "Grossrussishen Orkesters" Greatrussian Orchester.

Gipsy melodies were I belive forbidden in the Sovjet era and so are some other of these also. I have studied som of the russian Folkmusic published in the 90-ies and quite a lot of these melodies do not appear.

Insted there are of course hymns to Lenin and March of the Pioneers etc. which perhaps now are not as popular as at that time.