There are 2 matches

Collection Authorizer Collection name Reference
122530M. Clapham Kavanaugh Road strip mine (= Mazon Creek / coll. George Langford 1949) Westphalian D - Carboniferous 4 - Illinois Richardson (1956)
152406M. Clapham Coal mine 150 feet deep at Braceville Westphalian D - Carboniferous 4 - Illinois Handlirsch (1906)

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