The 1910 Polk City Directory listed Harry Hayden as the occupant of 520 Collins.  His business was Hayden & King Company which sold insurance and surety bonds.  The 1918 directory listed the resident as Pauline Bennett who worked from this home as a dressmaker.  Also, in 1918, Marie Studer, also a dressmaker, roomed and worked from here.  The 1921 and1924 directories listed George Joseph Evans who was a carpenter.  His wife was Anna Evans.