The CNJ 'plywood' cabooses were actually rebuilt from boxcars and had tongue-groove sheathing. When rebuilt in late 1950-1960's plywood was used instaed of costly/time consuming t&g.
Here are some prototype and then two 3-rail versions from MTH that sirt did decal work on for me. I now have over 17 CNJ cabooses as wood version and then also bobber versions plus...RMT, Weaver, MTH and LIONEL steel type cabooses plus 1 'real' steel CNJ 91545.
By the way, MTH catalog photos of 2 above cabooses show rounded cupola from PRR version but the non-PRR MTH versions actually have the square top cupola.
And here is the 'real' deal CNJ 91545.
Thanks.
Walter M. Matuch (retirement keeps me busy)