I have plotted virtually all of the original land grants for Baltimore County. Since its founding in 1659 (a date that is assumed, but has never been proved) there have been over 5400 patents as well as thousands of surveys for leases and for land that, for some reason or another, was never patented. Since its founding, there have been a number of changes in the County's borders:
From the beginning, I have used DeedMapper from Direct Line Software to plot all these patents and various other deeds and surveys. The following files may be downloaded to be used with DeedMapper. I suggest that you first create a new folder on your computer. Download the following three files into the new folder by right-clicking on each one in turn and choosing Save Link or Download. Once that's done the zip file needs to be extracted into the same folder.
If you have any questions, please e-mail them to firstname.lastname@example.org