actually the index is really only useful IMO when (a) used in conjuction with the map to see where the property is and to which properties it adjoins (or possibly was formerly part of) though the treen/quarterland helps here and (b) as a starting point to follow the trail of deeds and property transactions both via the deeds in the museum and also in Lib Assed and Lib Vast (a name is needed to find a transfer in North/South Side Sales index)