Sii wad qodobkaan - Clark waxay aheyd heesaha harpist-ka ee Denver Philharmonic Society markii ay aheyd gabadh dhalinyaro ah. Sanadkii 1915 waxay ka soo qayb gashay Bandhigga Caalamiga ah ee Panama-Pacific
San Francisco, waxaan ku soo bandhigay garaacis loogu talagalay shirkada Rudolph Wurlitzer. Sanadihii 1917 iyo 1918 waxay safar ku tagtay Waqooyiga Ameerika iyada oo ay weheliyaan fanaanada Swiss-ka ee Elsa Ruegger. Intii lagu jiray xilli ciyaareedkii 1919-1920, waxay ahayd harpist-ka kooxda Seattle Symphony Orchestra. Waxay qortay oo ay diyaarisay Charles Wakefield Cadman's "From the Land of the Sky Blue Water" oo loogu talagalay harp solo. Sanadkii 1928 waxaa loo aqoonsaday inay tahay "farshaxanka ugu fiican Mareykanka". Sanadkii 1931, waxay ka soo shaqeysay macalimiinta dugsiga xagaaga ee Mount St. Mary's College, oo baraysay shareerka.