February 22 1738
Went to Drury Lane play House to see Hamlitt Intertainment Harliquin ship wreck 2/6
Here is a picture of the inside of the theatre in 1775. It is the same building (which was demolished in 1791), designed by Sir Christopher Wren which Thomas visited.
An evening at the theatre typically consisted of a tragedy followed by a comedy and Harlequin Shipwrecked was one such.