Yesterday I finished reading the first book in the Star Trek Vanguard series: Harbinger (New York: Pock Books, 2005) by David Mack. As I recall, one of my nephews mentioned the series. I like the first book better than I have some other “non-canon” series and plan to read at least the next one in the series. I think Mack did a good job of integrating familiar characters from the original series to keep the interest of hard-core Star Trek fans.
So far, four more novels in the series have been published, and one is scheduled for release next year: