'Use Lard' redaction mystery

'Use Lard a North Dakota Product' was a July 1953 publication of the North Dakota Agricultural College,

A copy is available online courtesy of the North Dakota State University Institutional Repository. But Improbable's attention is drawn to the redaction at the top left hand corner of the document.

Can any readers solve the mystery for us? After all this time, is there still something officially under wraps regarding North Dakota Lard?

Any comments appreciated.