Likewise, does anybody have an idea where this blueprint for Operation Dagwood is? The only place I could find it is in the 1947 Marinship book on their history as a company. I specifically bought that old book just for this blueprint--I tracked down authors, historians, and the like, for all for them to point to this book--and yet I hear there are additional blueprints, in addition to blueprints for Operation Ironside portable harbors as well, somewhere...
EDIT: I misremembered. Dagwood is a lower-level code name for Iron Horse (not Ironside). They are the same thing, though some authors seem to confuse that fact to mean two separate operations.