It's well worth googling logging railroad pictures; you'll find a bit of everything.
I found a shot somewhere of some very long logs on disconnects that were so long (had been tall) that they possivtiely sagged between the disconnects.
Equally, I think I've said before, some railroads used disconnects exactly as the label says, with the logs joining the trucks, and the roosters used to connect the pairs, other used them the way that we tend to use them in model form, with each pair joined coupling to coupling with a rooster underneath the logs.
I've used mother nature's logs, from different sources - most of 'em are actually twigs, but Holly is quite a good source as it tends to grow straightish, but has a few knots. The first two wagons have Holly logs, the others are bits of Alder & Silver Birch - I've treated them all with Cuprinol, 'cos I don't fancy trolling through the woods for replacement twigs every couple of years

<message edited by Rhinochugger on 31/07/10 09:02 AM>