New Memeber....

[modelsof1900]

...
Does anyone here have any knowledge or photos of cross compound locomotives?
...

Dave,
click this link to a general system scetch of a cross compound steam engine.

Cross compound steam engines are engines wit two cylinder engines working with the copound system, where one side is working with high pressure steam and the other with lower pressure steam.
I know only a few pictures of older German cross compound locomotives like here - scroll down to picture 11 (Bild 11). However you will not see that compound system in whole, because second cylinder is mounted on other side. However this looks very identically - with a smaller cylinder only.
Or here, an other picture of such a 2-cylinder cross compound steam engine.
I know that Baldwin built a bigger number os such engines however I do not have pictures. More is written about these engines in the book "The Locomotives the Baldwin Built".