> Does anyone know of a web site or person from whom I may obtain
> some MIDI files of songs by Harry Lauder, the famous Scottish
> singer who lived 1870-1950?
> I want to adapt the song files for use on a street organ.

They're very simple arrangements and you may not have thought of it,
but check http://www.abcnotation.com/  E.g., for "I Love a Lassie",
http://abcnotation.com/tunePage?a=trillian.mit.edu/~jc/music/abc/Scotland/I_Love_a_Lassie/0000 

A Google search for Harry Lauder abc tune yields lots of other Harry
Lauder tunes.  The abc can be readily converted to simple MIDI file.
Here's a MIDI file of "Breakfast in Your Bed":
http://www.pitt-payne.com/midi-downloads.html?func=showdown&id=481 

Enjoy!
John Daly