Disambiguation evidence for WBBM (AM) via surface form

"the call letters WBBM"

Triples (1)

Triples where some other subject referred to this entity as "the call letters WBBM".

World’s Best Battery Maker → describes →
"the call letters WBBM"
↳ resolves to WBBM (AM)
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linked to: World’s Best Battery Maker (historical backronym for WBBM)