SACRAMENTO, Apr. 13 – Sandra Good and Susan Murphy, begging to join imprisoned Charles Manson family members, were given their wish today by federal Judge Thomas J. MacBride.

MacBride imposed a 15-year sentence on Miss Good, who was convicted last month of conspiring to send threatening letters through the mails and making telephone threats.

The judge imposed a five-year sentence on Miss Murphy, who also was convicted of the mail conspiracy.

“Both of you are dangerous,” MacBride said. “I’ve searched in vain, to mitigate your sentence.”

Looking down from the bench at the two defendants, MacBride declared “I am satisfied that if either or both you were put back on the street today you would immediately resume the evil course of conduct for which you stand committed.”

He said both “represent a serious danger to society. I look upon your conduct as acts of terrorisms hardly less egregious than the acts of political hijackers and kidnappers.

“Your letters, and in the case of Miss Good your statements over the radio, couldn’t help but strike terror into the hearts and minds not only of the addressees of the letters or the persons named on the radio broadcasts … but entire families and neighborhoods.”

Miss Good interrupted MacBride several times and at one point, she told him not to lie. She also declared that if the judge “loved life” he would see that the Manson family got a courtroom to defend itself against the past crimes of which members were convicted.

His remarks came after the two women were given extended time to deliver speeches in the crowded federal court room.

Miss Good, dressed in a full length, royal blue robe, said: “I cannot bear to be outside in your society … I want to be inside with my family.”

Throughout her remarks Miss Good made references to cult leader Manson, convicted mastermind of the Tate-LaBianca murders.

Miss Murphy said simply, “I want the maximum sentence and I want to go with the Manson family.”

The sentencing revealed that some of the threatening letters actually were mailed.

Assistant U.S. Attorney Bruce Babcock, who prosecuted the two, said 181 letters were mailed near the end of the trial. Miss Good was locked up then, but Miss Murphy, 33, was free on bail then and Babcock said Miss Murphy’s fingerprints were found on three of the letters.

Miss Murphy later said that there were some 700 letters and “a lot of them” were mailed. Neither defendant denied writing the letters but described them as warnings, not threats.

He quoted one of those letters as telling the recipient there would be “a world of blood” and that “you will be killed and that’s no —-.”

As she was led from the courtroom Miss Good told the judge he was behaving like an ostrich and “burying his head in the sand.”

Lynette “Squeaky” Fromme, another Manson family member, was named as an unindicted coconspirator but was not charged. She was convicted earlier of the attempted assassination of President Ford. MacBride was also the judge in that case and sentenced her to life in prison.