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The Unknowns ledger complete; the explained ledger's residue named
A county ledger has two halves — the cases the Air Force left unknown, and the cases it explained — and this section compiles the first whole and names the second as residue, rather than printing a half-ledger as a whole one. The Unknowns half: against Sparks' comprehensive catalogue of Blue Book Unknowns, read for this county, St. Joseph County holds one entry — South Bend, 13 October 1948, Brooke and Thompson, evaluated tentatively as debris with a question mark, worked in the preceding article. No Lakeville, Union Township, Mishawaka, or other county entry stands in that catalogue in any year, 1947 to 1969. That is a complete ledger of the county's official Unknowns at catalogue strength, and it supersedes the build's earlier posture, in which only the absence of a Lakeville entry had been checked. The explained half cannot be compiled from the Unknowns catalogue by construction — explained cases are exactly what it excludes — and the Air Force's full index, case by case for the county, has not been read page by page for this section. The residue is therefore named precisely, as settler, current: the Project Blue Book index itself (National Archives, T-1206), read for every St. Joseph County location entry, explained and unexplained together. Until that read is made, the county's Blue Book ledger stands as this article prints it: Unknowns, one, complete; explained cases, uncounted and unlisted, the gap named rather than papered. This item closes mixed on that named residue.