Manuscript sources. The Hassop muniments, part of the Bagshawe Collection in Sheffield City Libraries, have provided the chief source for this study. They consist very largely of deeds and related documents, but even these are not complete. A small bundle of some thirty miscellaneous papers, a number of them rough notes or mere domestic receipts, together with the parliamentary surveys of the estates, provide almost the only other estate papers in the muniments for the period covered. There are no letters, except for some half-a-dozen which have survived because the blank sheets have been used subsequently for business notes. The deeds are supplemented by two Hassop evidence books, compiled in the later 18th Century, now in the possession of Lady Stephens.on of Hassop Hall.