Jim I have an image of an "Explosives" card that is lettered for the
Minneapolis & St Louis. So it would appear some railroads had their own
cards printed. I also have an image of several cards that are lettered for
all four railroads owned by Ed Hawley, which dates the cards between 1900
I have create a photo album "Placards" where I have uploaded these and some
other MSTL cards that may also have been posted on freight cars. The photos
are awaiting approval by a moderator.