Here is a map showing the location of 320 3rd Avenue:
Here is a Google Street View image of 320 3rd Avenue:
320 3rd Avenue was sold for $276,100 on 25 September 2017.
It appears to be exactly the same design as the adjacent property to the south at 310 3rd Avenue, which was also built in 1920, so it quite possible that 310 3rd Avenue and 320 3rd Avenue were built by the same builder or developer.
We will add more historical information in future.