Entry: | [no page number], Manhole # 20 and adjacent tunnels section looking W, Drawing, Manhole # 20 and adjacent tunnels section looking W | |
Pg. 198, Manhole # 19, 19/5/1969, NB435 B6, Manhole # 19, Lot 6292 | ||
Date: | 19/5/1969 |
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