I am at a loss on this. I have a few pairs of MTH's and few pairs of Lionel Gooseneck street lamps - neither come with mounting screws or nails. The MTH ones have extremely small mounting holes - see picture. Are these meant to be fastened with small brad nails or screws - there's no screws that small I have ever seen? The underside of the base is hollow (not flat) making glue impossible to use, unless a large glob was used to fill up the hollow cavity of the base, but that seems messy and ridiculous - and would ruin the wires should I ever have to remove them. I will be mounting them to 3/16" foam board - which is over wood base.
For the Lionel version - I think I can buy small screws that will work, but am interested in how others fasten these down.