Whakaotihia te rerenga e whai ake nei: Ko Clark te kaiwaiata harpist me te Denver Philharmonic Society hei wahine taitamariki. I te tau 1915 i mahi ia i te
Panama-Pacific International Exposition i San Francisco, e whakaatu ana i nga harpa mo te Kamupene Rudolph Wurlitzer. I te tau 1917 me te 1918, i haereere ia ki Amerika ki te Raki me te kaiwaiata cellist Swiss a Elsa Ruegger. I te wa o te tau 1919-1920, ko ia te harpist me te Seattle Symphony Orchestra. I tuhia e ia a Charles Wakefield Cadman's "Mai i te Whenua o te Rangi Blue Water" mo te harp solo. I te tau 1928, i kīia ia ko "te kaikōkiri harpist nui rawa o Amerika". I te tau 1931, i mahi ia i runga i te kaitohutohu o te kura raumati o Mount St. Mary's College, e whakaako ana i te harp.