| He worked in Mitsui Noen Farm (Togoshi Farm), present Dai-ichi Engei, that Mitsui-zaibatsu built with flowers and plants collected from all over the world during the Meiji, Taisho era and during and after the Worlld War II in the early Showa era. |
永島は明治、大正、昭和初期の戦中・戦後の時代に、三井財閥が世界各国から草花を集めて造った三井農園（戸越農園）、現在の第一園芸に務めた。 |