The Bellows building, in its colors, round front, and use of vertical lines along the exterior, reminds me of the Essentia Health Building at 330 E. Second St.  That building was constructed just two years after The Bellows, but when I tried to figure out if the same architect designed it, I could only find this rather cryptic statement:

This building opened as a medical office in 1971. Today, it continues in that function and operates in relation to the nearby Miller-Dwan hospital. No architect or builder for the house has been identified, and research has yielded no information regarding an association to significant events or persons.
 
--Historic Resources Inventory for the East End Residential Area - Phase V, p. 78

Does anyone have any information that would either confirm or reject the relationship between these two buildings?