At Roller's initiative, a vast number of historic documents were published. However, these were carefully selected to conform to the party's vision, particularly in volumes on the War of Independence and on the 1907 Romanian Peasants' Revolt. For the first, documents casting Russia in an unfavorable light were removed, while for the second, documents not advancing the regime's desire to show the "savage repression of the bourgeois-landowning governments" were not published. Other collections were similarly doctored. For his work on the volume dealing with the peasants' revolt, Roller was again awarded the State Prize, first class, in 1951. Pleșa does give credit to Roller for ordering publication of documents from the country's medieval period, previously missing from print nearly in their entirety, and of an index to the Hurmuzachi collection that had become virtually unusable. Although professional historians worked on these projects, he also notes that Roller did not consent to have the documents published in their original form, especially due to the exigencies of working at a Stakhanovite pace, and that the finished products did not reach a very high standard.