1. `To the Monthly and Quarterly Meetings in England and Wales and Elsewhere, From our Yearly Meeting held in London the 20th 21st and 22nd days of the 3rd Month, 1689', Men's Yearly Meeting Minutes (March 1689), YM/Volume 1, Microfilm 13. Archive of the Religious Society of Friends London. The term Plain is still widely used by many Christian denominations, including the Amish and several other Anabaptist groups, to describe their style of dress. The first recorded uses of the term in early Quaker tracts dates from 1689, but it is entirely possible it was in general usage from before this date.
2. Variations on ‘Plainness’: Quaker Dress in Eighteenth-Century Philadelphia
3. Peter Collins, `Ethical Consumption as Religious Testimony: The Quaker Case', in Ethical Consumption, Social Value and Economic Practice, ed. by James G. Carrier and Peter G. Luetchford (Oxford: Berghahn Books, 2012), p. 184.
4. Elizabeth Isichei, Victorian Quakers (Oxford: Oxford University Press, 2008), p. 159.
5. William Pollard, `Colloquial Letters 9. My Unspoken Speeches in the late Yearly Meeting', The Friends Quarterly Examiner: A Religious, Social & Miscellaneous Review conducted by Members of the Religious Society of Friends, XI (1869), 443-444.