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ITEM 7 · 1871–2025
No technology works on this ground ever split, because none stood here — so the succession the checklist requires is the succession of the systems that serve the ground, and all three chains end at named present holders: The wire chain. The telephone plant that carried Granger's dial-up era descends through the Bell succession — Indiana Bell, the Bell System's Indiana company, to Ameritech in the 1984 divestiture, to SBC, to the present AT&T — the same corporate line whose fiber product now reaches some 27 percent of Granger homes in the FCC-derived record (item 10). The chain prints at system size; the township exchange-level detail belongs to GAP-84-1a. The rail-signal chain. The telegraph-and-signal plant of the Granger agency descends with the railroad itself, and the banked transportation leg carries the succession whole: Peninsular Railway (incorporated 1865; line opened to South Bend September 11, 1871) to Chicago & Lake Huron (1873), to Chicago & Grand Trunk (1880), to Grand Trunk Western (1900), to Canadian National (parent from 1923; Grand Trunk Corporation 1971), operating today as CN's South Bend Subdivision — with the second road's chain (the Big Four line through Granger to New York Central, Penn Central and Conrail, its last piece closed 1993) carried in the same leg. The depot key's wire and the subdivision's signal system are one continuous corporate descent, and CN is its present holder. The data-center chain.Three systems, three unbroken descents, no orphaned plant: on a ground that owned none of the works, succession is something that happened to its providers, and it is traced here to the firms that hold them now.
Sources:
- fifteenfortyseven Critical Systems Realty release, September 4, 2024 — the Union Station acquisition.
- FCC-derived provider record for Granger (item 10) — AT&T Fiber's present footprint, the wire chain's current holder on this ground.