21. EAP164/1/6/7 Reference (shelfmark): EAP164/1/6/7 Title: Archive of Perovska. Working writing-books. Library on paleontology, geography and biology Collection Area: Endangered Archives Programme Languages: Ukrainian Date Range: 18th century-20th century Extent: 107 Tiff files
22. EAP164/1/6/23 Reference (shelfmark): EAP164/1/6/23 Title: Information on the condition of the library of Perovska Collection Area: Endangered Archives Programme Languages: Ukrainian Date Range: 18th century-20th century Extent: 95 Tiff files
23. EAP164/1/6/14 Reference (shelfmark): EAP164/1/6/14 Title: Archive of Perovska. Correspondence with crew of the steamship “Sof'ja Perovska” Collection Area: Endangered Archives Programme Languages: Ukrainian Date Range: 18th century-20th century Extent: 28 Tiff files
24. EAP164/1/6/11 Reference (shelfmark): EAP164/1/6/11 Title: Archive of Perovska. Correspondence with Kal'ko A.G., Mamushkina L.V., Belousova T.N. and others Collection Area: Endangered Archives Programme Languages: Ukrainian Date Range: 18th century-20th century Extent: 191 Tiff files
