Manufacturer: cambridge
No, I don't really think this is Cambridge Art Pottery, but if you can't beat them after 25 years of trying...
This 4-7/8" to the spout creamer has Carnegie Hall Ellendale, N.D. on the front.
There is a 3-way spider crack on the interior bottom only and a repair to the rim inside and outside, above where the top of the handle is attached to the body.