The photos I posted in this thread are not wire photos, these are news service photos.
A wire photo was created when someone would take a TYPE I photo and run it through a wire photo machine (which AP perfected in the late 1930's) which works pretty much like a like a fax machine and the wire photos would be received at the other end hundreds or thousands of miles away.
So a single TYPE I photo would generally send out 25-50 wire photos to their affiliate newspapers.
Here is an example of a wire photo, notice how the caption is embedded into the photo not typed on a thin piece of brown, green, yellow, etc. paper and pasted on the back. Wire photos are TYPE III photos.
Also, if you viewed this photo with a $15 pocket telescope that can go 100x you will easily see the line pattern produced by the wire photo machine on the receiving end.
DiMaggioMantle.jpg
Here is a TYPE I News Service Photo...and under 100x it would appear cloudy with no dot patterns or lines.
gehrigdugout.jpg
gehrigdugoutverso.jpg