Type 3 Photos question

[jjbond]

I'm still trying to understand the categories of vintage photo identifications, as well as how they different photo types were used in practice, historically.

From my understanding (and I'm focusing on photos from the 1910s, so I know the practice would be different later on), a company would send their photographer out to an event. The photographer would take the shot, and develop the picture off of the negative, creating a "Type 1".

But in order to send it off to other newspapers for publishing, he would make a duplicate negative (to preserve his original), and "Type 3" photos would be the product of the newspapers using this duplicate negative.

Question - would he mail out duplicate negatives? Or would he mail out the "Type 3" photos? (I'm leaning towards the latter, as they would often have "Property of" or "Return to" stamps on the backside). If this is the case, would there be dozens of duplicate "Type 3" photos out there, for each of the newspaper markets the photo was sent off to?? (and then what we collectors find now are just the few surviving photos that weren't tossed in the past 100 years?)

Example - here's two copies of a photo published in 1914 newspapers. It seems they both were the same, as the smaller one is clearly cut in half (by looking at the stamp on the backside)