These stamps are on the east side of North Clemens Avenue between Jerome and Vine. There are two of them, a few slabs apart, facing in opposite directions. There is also one more that I know of on Clemens a short way south of these.

The northerly of the two stamps.
Looking south on Clemens. Sorry it’s too dark to be a very useful picture, but the above stamp is at the very bottom of the picture.

I haven’t been able to find out anything about T.E. Little. I did find a couple of references to a Mr. and Mrs. T.E. Little in The Lansing State Journal‘s society pages in the 1940s and 50s, but I can’t say if it is the same T.E. Little or not.