I have been working on a small layout (5 x 10) for a couple years with the goal of getting 1901-6 Lionel pieces running. The Youtube video below shows the current status of things.
I have two loops on the table made with original (later) track , as well as one switch and siding. They have a #300 trolley from 1903 and a #100 B&O from 1904-6 running on them in the video.
New is an elevated loop of scratch built track with a 1904ish #200 steel gondola at work.
The bridges are reproductions of the later Lionel bridge, one by Jim Cohen and one by Joe Mania.
The 3 pieces are a joy to run - they run effortlessly on low voltage.
Please take a peek at: https://www.youtube.com/watch?v=gpAMCl_cy40