The New Plain
, a 2004 essay by Rich the "Brooklyn Quaker" that used the term to describe a new wave of plain dressing Quaker bloggers. Quaker Jane
has become the best source of information on the why's and how's of this new wave of plain dressing Friends.
QuakerQuaker's Plain Resources
page has a longer list of quotes and links about plainness.
Plain Friends Page
, a wonderful collection of essays on plainness from Crossroads Friends Meeting in Michigan.