According to one source:
SACX *SANTA CLARITA RAILWAY
From: STMFC@yahoogroups.com [mailto:STMFC@yahoogroups.com]
Sent: Friday, November 18, 2016 20:32
Subject: [STMFC] Reporting marks
Does anyone have who the reporting marks SACX belonged to? The tank cars that the Tweetsie received came with these reporting marks. They were also reported to be from Tennessee Copper, but no one is sure of this being correct. I do know the tank cars have what looks like acid domes on them. Does anyone know where I can get acid domes for modeling these tanks in HO?
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