PORTLAND, OR., Sept. 12 — An Oregon State Penitentiary inmate who is a member of a group accused of plotting to kill the warden was visited last October by Lynette (Squeaky) Fromme, charged with the attempted assassination of President Ford, and by Miss Fromme’s roommate, Sandra Good.

Federal and state authorities are investigating whether there is a link between a penitentiary group known as “the Family,” implicated in the alleged murder plot against Superintendent Hoyt C. Cupp, and West Coast radical groups that allegedly are trying to disrupt prisons.

Miss Fromme and Miss Good are both members of the Charles Manson cult in California. The prisoner they visited at OSP Oct. 10 and 11, 1974 is Stephen George Bekins, 36, a past associate of Manson gang members, including Miss Good.

Bekins, Miss Good and another individual were arrested together in Portland in July, 1972, 10 minutes after the holdup of a Kienow’s supermarket at 5544 E. Burnside St.

Bekins was sentenced to 20 years imprisonment in November of that year, and Miss Good fled to San Francisco after being released on her own recognizance pending a trial on charges of hindering prosecution and illegal flight to avoid prosecution.

She was arrested in San Francisco in December, 1972, after a policeman noticed an “X” mark on her forehead — a Manson emblem — as she waited for a bus downtown.

Returned to Portland, she was sentenced to a three-year probation. She and Miss Fromme both applied for permission to visit and correspond with Bekins on June 9, 1974. Both listed the same address in Sacramento. Miss Fromme listed her occupation as “writer.”

Miss Good’s application was rejected, at first, after she admitted on her application that she had been convicted of a “misdemeanor.” The California Probation Department wrote a letter to Oregon officials expressing no objection to an association between Miss Good and Bekins — but apparently nobody connected the fact that both had been convicted in the same crime.

Bekins is one of seven OSP inmates being held in the prison’s Segregation and Isolation (S&I) Building in connection with the activities of the Family —a group whose deeds, purposes, and even existence, are a matter of dispute between prison officials and friends of those allegedly involved.

Three other alleged members of the family, Stephen Kessler, David Dunster and Chris Anderson, have been transferred to county jails pending an effort to transfer them to prisons in other states.

Allegations about the Family broke into print last week when the Oregon attorney general’s office revealed that an alleged member had written a letter threatening to murder Cupp and an unspecified number of guards unless “harassment” of members was ended.

Prison officials claimed that the inmates were being “encouraged by outside radicals to make trouble.”

Ron Lewis of Winston, president of Citizens for Better Government, Inc., asserted prison officials were persecuting the men for their efforts to improve conditions in the penitentiary. He said the charges were “trumped up” to hide what he called the incompetence of the prison administration.

Bekins, who has served time in California and Oregon on burglary and robbery charges, with only a few months on the street since 1958, is believed to have become acquainted with Manson clan members while living in the Los Angeles area.

Miss Good, who was accused of hiding Bekins after the Kienow’s robbery, told reporters Thursday that “assassinations are necessary since people are asking for trouble by hurting earth and from what they are programming on television.”

She said 3,000 persons have been targeted for death by “the international peoples’ court of retribution.”

There was no information Thursday on whether there was any connection between the alleged list and communications threatening the prison staff here.

By DOUG YOCOM and JAMES LONG