After the couple had arguments about Reagan's political ambitions, Wyman filed for divorce in 1948, citing a distraction due to her husband's Screen Actors Guild union duties; the divorce was finalized in 1949. Wyman, who was a registered Republican, also stated that their break-up was due to a difference in politics (Reagan was still a Democrat at the time).
In 1949, AT&T commercialized Mobile Telephone Service. From its start in St. Louis, Missouri, in 1946, AT&T introduced Mobile Telephone Service to one hundred towns and highway corridors by 1948. Mobile Telephone Service was a rarity with only 5,000 customers placing about 30,000 calls each week. Calls were set up manually by an operator and the user had to depress a button on the handset to talk and release the button to listen. The call subscriber equipment weighed about 80 pounds (36 kg).
Talks for a new military alliance which could also include North America resulted in the signature of the North Atlantic Treaty on 4 April 1949 by the member states of the Western Union plus the United States, Canada, Portugal, Italy, Norway, Denmark and Iceland.
In 1949, Du Bois spoke at the Scientific and Cultural Conference for World Peace in New York: "I tell you, people of America, the dark world is on the move! It wants and will have Freedom, Autonomy and Equality. It will not be diverted in these fundamental rights by dialectical splitting of political hairs ... Whites may, if they will, arm themselves for suicide. But the vast majority of the world's peoples will march on over them to freedom!"
In November 1949, the logo was modified to incorporate the company's formal name, National Comics Publications. This logo would also serve as the round body of Johnny DC, DC's mascot in the 1960s.
For the first three years of his life, Bundy lived in the Philadelphia home of his maternal grandparents, Samuel (1898–1983) and Eleanor Cowell (1895–1971), who raised him as their son to avoid the social stigma that accompanied birth outside of wedlock.