George Costacis: a collector of priceless history, which was regarded as rubbish

[Кирилл Сызранский]

The official website of the State Museum of Contemporary Art in Thessaloniki, have put the archive collections of G. Costaki.

http://www.greekstatemuseum.com/kmst...dropdown_0=337

Actually, a good site, there is the Russian version.
And:

State Museum of Contemporary Art, in addition to the collection Kostaki, consisting of 1,275 works of art Russian avant-garde, also belong to the large number (ca. 200) paintings and sculptures of Greek and foreign artists, donated to the museum organization in Thessaloniki - Cultural Capital of Europe - 1997 ".