The tin locomotive seems to be a Marx 391 Canadian Pacific loco from about 1938. See it running here.
The black steam locomotive looks to be prewar Lionel, as is the #248 electric loco.
http://www.train99.com/ency/lionel1/eng/l250sra.htmlThe rolling stock is also prewar Lionel.
You seem to have an American Flyer #7 transformer and a Lionel transformer, although I cannot see the number on it.
Larry