Kathy Labriola on Polyam Holidays: https://www.kathylabriola.com/articles/poly-holiday-tips
Elisabeth Sheff on not coming out during the holidays: https://www.psychologytoday.com/us/blog/the-polyamorists-next-door/201612/poly-the-holidays
The Relational Nonmonogamy Circle: https://libbysinback.com/rnmc