Henry Hollander Books is having a 50% off sale on selected books. There are a significant number of books on sale, covering many different genres. The catalog is available online and the sale runs through the end of January.

There are two auction catalogs online. The first, Asufa, who is having their auction on Janaury 24 is available here. The second, Baranovich, is having their auction on the 23 of January and you need to first fill out a form to get the catalog in PDF.

The Asufa auction includes a rare proclamation regarding the Besamim Rosh, a slew of books relating to various controversies, as well as many other interesting books.