Thank you, Arnis, for your recommendation. I tried your solution, and it works. However, the lines and text in the PDF version are not as sharp as they were in the original AutoCAD LT drawing or the OLE2 object. Also, we prefer to embed images in the FrameMaker document. When graphics files are linked by reference, multiple graphics folders and the FrameMaker documents folder must always maintain the same file location relative to one another to preserve the links. Our archival system does not always preserve this relationship; sometimes, they misplace graphics files altogether. When we reopen the FrameMaker book, gray boxes are displayed in place of drawings and error messages complain about missing files.
I found a solution that works for now--until the next Microsoft service patch. Use Paste Special and select Metafile to embed the drawing as a Windows Metafile (WMF format). The drawing is scalable, and the lines and text are as sharp as the original AutoCAD drawing. I do not know if this solution will work for David's Excel spreadsheets, but it's worth a try.