From the New York Times:
I can’t keep all this Spy vs. Spy stuff straight in my head, but I did observe a two-generation link from the, uh, purported FBI investigator to that pinnacle of American Deep State competence … yes … The Bay of Pigs.
Here’s a 1983 New York Times article by Leslie Gelb that has more:
By LESLIE H. GELB and SPECIAL TO THE NEW YORK TIMES
The New York Times Archives
An operation to collect inside information on Carter Administration foreign policy was run in Ronald Reagan’s campaign headquarters in the 1980 Presidential campaign, according to present and former Reagan Administration officials.
Those sources said they did not know exactly what information the operation produced or whether it was anything beyond the usual grab bag of rumors and published news reports. But they said it involved a number of retired Central Intelligence Agency officials and was highly secretive.
The sources identified Stefan A. Halper, a campaign aide involved in providing 24-hour news updates and policy ideas to the traveling Reagan party, as the person in charge. Mr. Halper, until recently deputy director of the State Department’s Bureau of Politico-Military Affairs and now chairman of the Palmer National Bank in Washington, was out of town today and could not be reached. But Ray S. Cline, his father-in-law, a former senior Central Intelligence official, rejected the account as a ”romantic fallacy.”
Investigations Under Way
The disclosure of the information-gathering operation added to the furor over revelations that Reagan campaign officials came into possession of Carter debate strategy papers before the candidates’ televised debate.
Ray Steiner Cline (June 4, 1918 – March 16, 1996) was an official at the United States Central Intelligence Agency best known for being the chief CIA analyst during the Cuban Missile Crisis.
It looks like the Reagan campaign in 1980 inherited Halper from the GHW Bush campaign.