In early December 1876 the manuscript was brought to Moscow by a peasant from Arkhangelsk regon and was acquired by a Rumyantsev Museum trustee, merchant, old believer S. T. Bolshakov.
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In 1823, the tomb of Werner Schall von Bell was discovered in the mud of Yakimanka District, and since then was preserved, first in Rumyantsev Museum and now in Moscow Kremlin.
Mashkov continued surveying memorial buildings (some of them already scheduled for demolition) and headed the restoration of Pashkov House (then known as Rumyantsev Museum, later Lenin Library and Russian State Library).