I'm probably sticking my neck way, way out here, since there are plenty of folks who know the history of the WW&F's rolling stock than I do, but here goes. When the line opened in 1894, there was a cupola caboose, No. 300, that appears in a few photos. Later, there were three cars, Nos. 302-304, that were identified as "waycars." They looked like boxcars, but has several windows on each side, as well as end platforms and doors, and a stove. They may have been used as cabooses when the WW&F had freight trains, but I imagine when traffic fell to the point that only mixed trains were operated, cabooses were replaced by passenger equipment like RPO combine No. 2.