This is a very interesting news article. It was published on Wednesday, 6 August 1969 only three days after Lompoc Jane Doe's body was discovered. It does not, however, mention her case - only that four other (different) cases might be connected with the murder of Roxie Ann Phillips.
The article mentions that Andrew Manuel was believed to have been in Salinas, California as recently as "last Saturday" which would have been 2 August 1969. He was very closely allied with John Norman Collins, and known to be his partner in numerous crimes. Both had returned from California to Michigan in late July 1969, but when he became aware that Michigan authorities were closing in, he fled back to California.
He was arrested by the FBI in Phoenix, Arizona at the home of his sister in early August 1969 and delivered to Michigan authorities. His route from Salinas, CA to Phoenix, AZ would have taken him through or near Lompoc.
In Michigan, he was offered a plea deal in which he would be charged only with theft of the camping trailer he and Collins had taken to California in return for his testimony against Collins in the Karen Sue Beineman murder trial.
Manuel provided no useful testimony, but was given only a short jail sentence for the theft charge. He was paroled early, during which time he again fled Michigan, breaking parole, and having to be apprehended again and returned to jail in Michigan.
He later served two terms in Federal prisons for other unspecified offenses.
Given the many similarities in the murder of Lompoc Jane Doe to the Michigan murders and to that of Roxie Ann Phillips (whose destination was Lompoc), AND the presence of Andrew Manuel at the time of Lompoc Jane Doe's violent murder, I believe that he should be considered a strong suspect in her death.