William Dennison McCrackan, The Rise of the Swiss Republic (1892)
“ Nothing can give one so good an idea of the extent of the family power of Habsburg on all sides of Uri, Schwiz and Unterwalden, as the roll of the estates, the so-called Urbarbuch, in which were recorded the lists of properties and offices with the revenues appertaining to them. An examination of this terrier, which was begun by Rudolf and finished by his son Albrecht, shows conclusively that the Forest States were surrounded by a veritable cordon of Habsburg estates, and that nothing but a determined effort on their part could save them from becoming completely owned by that ambitious family. ”
