Thomas did not join Charles, Henry, or Richard in drawing for Punch but he was the principal source of the jokes that his brothers drew for Punch. Thomas played a full part in social life in Cambridge. He was a key member of the YMCA's Literary and Debating society. He also played Ping Pong, and was an officer for the Chess and Draughts club. He was a member of the local authority sub-committee that managed the School of Arts and Crafts. While all of the Brocks seem to have been involved in the Baptist Chapel at St Andrew's street, Thomas and Katharine seem to have been the most involved. Thomas was also a member of the Robert Hall Society, a Baptist student society established by the celebrated classical scholar T. R. Glover and named for the Baptist Robert Hall who had ministered in Cambridge. The society met at the St Andrew's Street Chapel, and was doing so even 60 years later. The society was the first of many Baptist student societies that eventually coalesced into the Baptist Students' Federation. The eldest of the Brock children, Alice Emma, died on 24 July 1896. Tomas was present at her death in Great Yarmouth. Thomas had gained his B. A. the previous year and was presumably working on his M. A. He was living at home at 14 Brunswick Walk. He left home at 3:30 on 21 December for a short walk, but did not return. His family advertised for any information about him four days later. It is not clear what happened and when he returned. Thomas never married. Sometime in 1938 or 1939, Thomas and Bertha, who were recorded in the 1935 electoral register as living at Arundine House, moved to 15 Howes Place, Cambridge, where they shared a house with Annie, Charles' widow. Bertha died there on 28 February 1939. Thomas served as the executor for her will, which named him as Thomas Alfred Brock, artist. Thomas did not long survive Bertha, dying on 20 October 1939, after a short illness, at the house he was sharing with Annie. He was buried in the same plot as Charles and Bertha at Histon Road Cemetery, Cambridge. Technical illustrations by Thomas The following illustration by Thomas were from the Monograph of the Palaeontographical Society Volume 63 in 1909. Thomas contributed many illustrations to the monograph from 1900 on. Cambridge University Press recently