Not much here.

Assembling these in quantity can be quit tedious, these don´t snap like later tracks, so typical brick clutch-power is the only thing holding these together.

The upside to this is that any 2x8 plate can be used, and or all the white ones you got could be used for other creations.

Another interesting point is that the tips of the blue rails have slight indentations. These may seem odd, but were there to allow slight changes in elevation of the track layout.