This publication details a study done by Louis Harris and Associates in 1975 to assess attitudes toward nuclear power in the United States. The survey consisted of three parts. The first part was in-person, door-to-door interviews with 1,537 scientifically selected households nationwide. The second part was 301 personal interviews, about 1 hour long, with neighbors of nuclear power plants in three areas of the country. The third part was personal interviews with 201 political, business, environmental, and regulatory agency leaders in the nation. Interview questions and data, discussions of each section of the study, and a general summary are included. Some of the topics examined are the advantages and disadvantages of nuclear energy, waste disposal, pollution problems, safety, and economics of nuclear power. Attitudes toward increasing numbers of nuclear power plants, confidence in utility company management and in environmentalists, trust in the news media, and financing nuclear development were also surveyed. It should be noted that this study predates the natural gas and coal shortages of 1976-78. (MR)