I promised to put up some bibliographic notes for people who attended the BayCon panel "Costuming through the Ages" (i.e., what people in the past wore when then "dressed in costume"). Some of these are directly related to the topic of the panel, and others came out of a request for historic costume references on specific topics. Here are the titles that I remember being mentioned:
Facsimile of a Renaissance Italian Court Designer's Sketchbook