I've been part of this guild for at least a couple of weeks but, I cannot believe I didn't share this before.
I'm unsure if they would have used parchment paper and quills in these time periods but, for me, they are awesome and are part of the time period.
http://www.nostalgicimpressions.com/They sell real feather quills but also inkwell quills--the ones you need ink bottles for and need to keep dipping in the ink to keep writing. They also sell parchment paper, sealing wax, embossers, and sealing prints.
I have one of the quills, some of the wax, a sealing ring and some parchment paper. They work very well, especially at Christmas time.
Note, however, that sealing wax will peel skin no matter how fresh the spill x.x
I've also found that Wal-Mart sells ribbon that works will with wrapping the parchment paper.