Yeah, it seems they do, but luckily I found a place that has the manuals and .dsk images loaded: http://mirrors.apple2.org.za/Apple%20II%20Documentation%20Project/Interface%20Cards/Apple%20III/Titan%20III%20Plus%20IIe/You are basically correct on the Titan cards. I don't know if they require specific software, but think they do.
Very nice pickup. If you want to sell them, let me know :-0