The text is a letter from John H. Cantrell to Senator Mike Monroney expressing support for the "sonic boom tests" in Oklahoma City and concern about the Civil Rights Bill. Cantrell urges the senator not to vote for the bill in its present form, as he believes it will have negative consequences. Senator Monroney responds, acknowledging Cantrell's concerns and assuring him that the majority of the Senate believes the bill can be made to work effectively.