B&M Boxcars With Roof Hatches

B&M had 40 foot boxcars 67000-67039 and 67040-67067 that had roof hatches for loading grain. Can anyone point me toward photos of these cars or articles on modeling them? Thank you.

cefredericks-
Don't immediately recall seeing anything. If you haven't done so already, you could check the B&MRRHS Forum. Would these have been in Hoosac Tunnel Docks service or other feed and grain service around the system?

Thanks for reply. I'll dig around some more.
Carl