The map number (i.e.S41-034-099-00) contains all the information needed to look at a map.

A reference number (i.e.410018460) can be used to find a map number.

The S represents a surface map (the parcel maps), M would be the coal maps, L represents land lease structures.

41 represents the district number that correlates to a township or borough name.

034 represents the sheet number to choose within a township folder, see list below for boroughs.

099-00 represents the parcel number to look for on the sheet that was just chosen.