I concur with Geoff.... WFW series are a must if you have a ww2 wireless interest... The books may appear expensive.... But, just consider the cost to obtain this information privately... Comparatively cheap for the info you get.
If you have stuff which does not appear in the books or is different.... Send Louis the data so he can provide an update in the next compendium or note release... In return I find he is always very accommodating if you want to share the material elsewhere.... Though I think he would have an issue if you reproduced the whole book!
Tim
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