There is a gridsquare (T)C at the top of this British topo sheet of Iraq, the (T)C square covers Basra.

https://nla.gov.au/nla.obj-233334852/view

and the same grid on this sheet
https://nla.gov.au/nla.obj-233336193/view
[https://nla.gov.au/nla.obj-233336193/representativeImage?wid=250]<https://nla.gov.au/nla.obj-233336193/view>
Iran-Iraq 1:500,000 [cartographic material] : Basra.<https://nla.gov.au/nla.obj-233336193/view>
nla.gov.au


Brendan Whyte
National Library of Australia
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