The test pattern after the 'Lab 27 Reality Show' has an Indian in a full headdress, just like the 1950s real test pattern, except the Indian is Fargo.
At 43:08 the camera zooms in for a close-up of the film canister. The label reads: TOP SECRET ~ United States Department of War ~ February 21, 1938 ~ REPORT IF SEAL IS BROKEN ~ 202-NH0-3864. A contributor has written a very interesting review in which he goes into great detail why the "phone number" on the film canister is in error. This is not a phone number but a cataloging number. Not to mention it is a historical artifact of depicting nuclear testing at Eureka before 1945.
The face of the Native American on the test pattern is Fargo.
The title of this episode is the same as the movie "What About Bob?" (1991)