Mark Scott launched his book 'Transport Number 4 - Vienna 1941' at the Public Records Office Northern Ireland on Titanic Boulevard in Belfast. The event took place on Thursday, March 5, 2026. An earlier launch occurred at the Irish Linen Centre and Lisburn Museum.

The launches were originally scheduled for Holocaust Memorial Day on January 27 but postponed due to stormy weather.

The book covers the experiences of Charlie Warmington's mother Gertrude Kessler and her brother Fritz. In April 1939, the siblings boarded a Kindertransport train from Nazi Austria and arrived in Millisle, Co Down. Their father Leo was later killed in a death camp.

Charlie Warmington, a former News Letter writer who edited the 'Roamer' column, died in November 2025 aged 75. A tribute event for him was held in Enniskillen early in 2026.

Gertrude Kessler married Theo Warmington, an Ulster doctor. In 2024, Charlie Warmington asked Mark Scott to research his family's history.

The book also documents family members who worked in a communist resistance cell in Vienna. It received support from the NI War Memorial Museum and is available for purchase online.