The Land and Government of Muscovy: A Sixteenthcentury Account. By Heinrich von Staden. Translated and Edited by Thomas Esper. Stanford: Stanford University Press, 1967. xxvi, 142 pp. $5.50. - Of the Russe Commonwealth (1591). Facsimile Edition with Variants. By Giles Fletcher. Edited by John V. A. Fine, Jr., and Richard Pipes, with an Introduction by Richard Pipes. Cambridge: Harvard University Press, 1966. xii, 98, 8, 116 pp. $7.50. - Of the Rus Commonwealth. By Giles Fletcher. Edited by Albert J. Schmidt. Ithaca: Cornell University Press, 1966. xliv, 176 pp. $6.00. - The Travels of Olearius in Seventeenth-Century Russia. By Adam Olearius. Translated and edited by Samuel H. Baron. Stanford: Stanford University Press, 1967. xviii, 349 pp. $8.95.