Dear Caucus, In September 2015, the RSSAC held its first workshop to discuss issues related to the evolution of the root server system. The public report of the successful workshop is available on the RSSAC publications page <https://www.icann.org/resources/pages/rssac-publications-2014-05-12-en>. To prepare for the workshop, the RSSAC compiled a document outlining the history of the root server system. This document provided a foundation for informed discussions at the workshop. The RSSAC has further reviewed the document since the workshop. Before publication, the RSSAC would like to seek input from the Caucus on this document. The RSSAC would like to propose a process for Caucus review of the draft history of the root server system document. Through *04 March 2016*, the RSSAC invites Caucus members to review the draft for factual correctness. At the end of the 4 week review period, the RSSAC will determine if further Caucus review is necessary before proceeding with publication. Please send your input directly to *Steve Sheng at steve.sheng@icann.org <steve.sheng@icann.org>.* The RSSAC hopes robust Caucus review will strengthen this important document on the history of the root server system. Please do not hesitate to contact us with any question or concerns. We look forward to your contributions. Best regards, Tripti Sinha and Brad Verd RSSAC Co-Chairs