I think that would be useful.  Thank you again.

The files were in CMYK.  Just tried changing a file to RGB, and it works fine.  Thank you. 

BTW, is this requirement in the documentation somewhere?

Also, I have to resize the files (i.e., change the width and height under Info tab).  Don't know if that is relevant or not.

I use the "Export" option in INDD and select JPEG from the format menu. To put the file in IB, I ADD ELEMENT (usually a graphic element) and on the Props page under the Image option I choose "Select Image File. . ."