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Notes:
Title and date from item, from additional material accompanying item, or from information provided by the Boston Public Library.
Additional information on item: Picture 33 - damaged section of wall where riprap is missing. Note that stretchers in some cases have been moved back from face of wall nearly a foot. Undercutting action, probably due to storm wave action against face of wall, and resulting back-wash has undermined paving between headers. This appears to be a good demonstration of the necessity of riprap in the protection of such walls.