From my personal collection, here is a group of postcards and ephemera signed by Titanic survivors including:
Eva Hart
Edith Haisman
Millvina Dean
Ellen Walker
Robert Ballard - who discovered the wreck in 1985.
These were collected over many years either in person at British Titanic Conventions or through meeting the survivors themselves. Most are stamped and numbered.
Selling as one lot. Thank you for your interest.