Published online by Cambridge University Press: 09 November 2011
Many units of the Roman army stamped the tiles which were manufactured in military tileries, and these tile-stamps can be useful in assigning structures to the units concerned; and ultimately they can also be employed as an aid to dating once the die-sequences have been established, or directly from imperial titles incorporated in the stamps. But it must be remembered that tiles were frequently re-used and can often therefore only indicate a terminus post quern.
1 Acknowledgement is here paid to the museum officials and directors of excavations who have sent the writer squeezes and rubbings or made their material available in the last three decades. It seems fair to mention the large group from the excavations of 1967–72 under York Minster, made available in 1967 by Mr. H. G. Ramm and thereafter by Mr. A. D. Phillips and worked on by Miss L. G. Whalley. Secondly by leave of Mr. P. V. Addyman, Mr. J. A. Spriggs worked over the material from York Archaeological Trust. Mr. L. P. Wenham sent material from his various excavations.
F. Haverfield left a set of squeezes of the tile-stamps in the Yorkshire Museum, York. This has filled in a few items which have not been available since 1940.