Yes, please. My maternal grandmother was a Blackburn, from Pennsylvania and from roots that were part of the Irish Quaker migration (& also one of the first Rockettes, but that's another story). I was having a great time resarching her family, thanks to the meticulous records you speak of, when I came across, in a tome on another family in Bedford Co., the crazy way that the Friends kept those meticulous dates (at least in Pennsylvania) from 1682 to (c) 1751 making most of my date transpositions from the Town Records (& eventually *all* official documents) from ddth day of the mmth month yyy to dd MMM yyyy completely inaccurate (by 3 months). (I'm finding that most dates from this period that I have brought in from other trees are also inaccurate in the same way. If I'm going to be researching Quakers, I guess that I need to have other Quaker researchers to bounce things off of!