Gravitomagnetic Field Experiments
NOTE: Links now lead to ARCHIVE.ORG copies. I don't know much about Wallace myself. I just put these files online so others could take copies. They used up so much space that I eventually took them down.
Method and Apparatus for Generating a Dynamic Force Field. Dr. Henry Wallace, Nov. 4, 1968
Method and Apparatus for Generating a Secondary Gravitational Field. Dr. Henry Wallace, Dec. 14, 1971
Thanks to Rob Dowse!