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JANUARY 1957 · SEAT: SOUTH BEND · DISPOSITION: INSUFFICIENT DATA
The county's file does not end with the 1952 wave; it ends, so far as this build's pull reached, with one more line five years later. In the Air Force Master Index for 1957, the section headed "January 1957 Sightings" opens with the entry: South Bend, Indiana — Insufficient Data. The day of the month is not legible in the copy read, and no case number can be recovered from it; the entry prints here as the index gives it, month and year certain, day unstated. Nothing else about the report — witness, hour, description — survives in the index, which is itself the finding: by 1957 the Blue Book office was logging a report from this county and closing it in the index's thinnest category without leaving a recoverable account behind.
The entry's context is the office's own late period. Nineteen fifty-seven was, by case-file count, the busiest year in the surviving file series — the parsed National Archives index holds more 1957 files than 1952 files, with November 1957 alone contributing hundreds in the Sputnik-season flap — and the county's share of that flood, on the record reached, is this single January line. It is the last St. Joseph County entry this build's sources produced: the Berliner Unknowns list, read whole, holds no county case after Kloth, and the county's ledger below closes its count here, with the years not line-swept named as a gap rather than silently assumed empty.
Sources: Air Force Master Index, 1957 (Project Blue Book Indexes, archive.org, redacted high-resolution copy), "January 1957 Sightings," first entry — South Bend, Indiana, Insufficient Data, day not legible in the copy read; RearAccess, National Archives case-file index (1957 the peak file year; November 1957 the peak month).