Alphabetical subject index to road matters, with lapse in dates from 1898 to 1911. Subjects include Board of Supervisors' actions (such as bids and bonds), and proper and place names. Index to: Road Book--Board of Supervisors (567), Vols. 3, 4, 5 and 6; and to Road Minutes (571), Vols. 9-10. Index shows: Date; (subject); District (showing vol. and page). Listed in the 1980 inventory of the Sonoma County Clerk's office as: no. 568.