This is a response to Zelia Brandt’s inquiry about feathers damaged by wax. Objects conservator T. Rose Holdcraft provided the following information:
There is a book entitled the Conservation of Fur, Feather and Skin edited by Margot M. Wright with 2 descriptive articles on cleaning and nuances of cleaning objects with feathers as well as a single feather that can be positioned flat on a blotting surface.
Perhaps inquire with Marcia Rizzo, director Restoration in PUC-SP Brazil at mrizzo@mrizzo.com.br , or Marcia Rizzo could provide names of other colleagues in cultural heritage who may be available to assist.
If you would like more specifics on solvent cleaning or other information, please send further details about the situation.