Wire Connector Rail

[rjluna2]

I was going through one of these several boxes that was collected by my late father's stuff and came across a bag of wire connector rail that predates printed circuit board. The only thing I was able to place this at Wikimedia Commons at https://commons.wikimedia.org/wiki/Category:Electrical_parts_and_components page.

Any idea how to find other category that would fit nicely to this?

Here is the parts that I have in my possession: