Few problems in modern Russian history are more complex or more bewildering than that of political Masonry (politicheskoe masonstvo) and its contribution to early-twentieth-century oppositional politics. A decade and a half ago Nathan Smith observed that “Available firsthand evidence about the [political Masonic] movement […] is incredibly limited and raises as many questions as it answers.” That observation is still valid as the origins, structure, composition and activities of the conspiratorial political Masonic organization remain among the best-kept secrets of Russia's past. Indeed, political Masonry was first mentioned in the historiography on the February Revolution only in the early 1930's. Then, for nearly three decades, scholars simply ignored the problem altogether. This was partially due to a paucity of sources; but equally important was the fact that the subject conjured up images of that pernicious Jewish-Masonicconspiracy theory so popular among right-wing émigré circles. During the 1960's historians once again turned their attention to political Masonry, although infrequently and usually only in passing. Since that time a number of treatments have appeared, yet none takes account of all the available evidence. Moreover, many historians continue to reject out of hand all efforts to deal with political Masonry, dismissing them as attempts to perpetuate the Jewish-Masonic-conspiracy myth, while other scholars reject the suggestion that the political Masonic organization played a crucial role in the overthrow of the Russian Monarchy and the establishment of the Provisional Government in 1917.