CREATE TABLE table_10557 ("Year" FLOAT, "Butterfly" CLOB, "Artist" CLOB, "Mintage" FLOAT, "Issue Price" CLOB, "Finish" CLOB)

Which artist's work is the butterfly Tiger Swallowtail?
SELECT "Artist" FROM table_10557 WHERE "Butterfly" = 'tiger swallowtail'
SELECT "Artist" FROM "table_10557" WHERE "Butterfly" = 'tiger swallowtail'