A Titanic Library
Some of the best books about Titanic are available in free eBooks.
RMS Titanic, an essay by Hanson Baldwin, 1934
Lucy Duff Gordon, Discretions and Indiscretions, 1932:
Her description of what happened on Titanic starts on p. 147. If you like the period, read the whole book, which is full of delicious Edwardian scandal and gossip.