I will check out dates as soon as I can. In the mean time, here is a closer look at the two maortars used.
And, of course, dates are pretty easy. The Landmark Trust have a page about the stables.
Sun | Mon | Tue | Wed | Thu | Fri | Sat |
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1 | 2 | 3 | 4 | |||
5 | 6 | 7 | 8 | 9 | 10 | 11 |
12 | 13 | 14 | 15 | 16 | 17 | 18 |
19 | 20 | 21 | 22 | 23 | 24 | 25 |
26 | 27 | 28 | 29 | 30 | 31 |
Jacques Heyman: The Stone Skeleton : Structural Engineering of Masonry Architecture