York Historic Environment Record

RCHME: The tower is of Severan date built on an earlier clay and cobble foundation. It survives to 9ft above the foundation with only the top 2ft visible. The internal dimensions are 9 1/4 ft from back to front, 11ft along the rear wall and 11 1/2 ft along the fortress wall. The foundation is 4 ft deep and seperated from the Severan walls by a bed of concrete 6 inch deep. See RCHME for full information although plates may not be available.
https://www.british-history.ac.uk/rchme/york/vol1/pp5-47

NMR information:
A Roman interval tower (NE6 on key plan) was partly excavated in 1926 by S Miller and the upper part exposed in 1953 by the City Corporation. (2)

[Towers NE 1-5 have not been discovered and are conjectural positions.]

Published survey correct. The last excavtion of the tower has been left open, and the wall core is exposed to a depth of 0.7m. See GP Ao/63/113/5. (3)

1 Ordnance Survey Map (Scale / Date)
Default value used to record large numbers of archive items which are not separately catalogued. See Monument Recording Guidelines for details of use. 1:1250 1961
2 An inventory of the historical monuments in the City of York. Volume I: Eburacum: Roman York
1962 Royal Commission on Historical Monuments, England p31-2
3 Field Investigators Comments F1 RW Emsley 05-Jun-1963

RCHME, 1962, Inventory of the Historical Monuments in the City of York, Volume 1 Eboracum, p31 (Bibliographic reference). SYO62.

NMR, 2019, NMR data (Digital archive). SYO2214.