Of course you've heard about the Barker Ranch raids of October 10nth & 12th of 1969, which rounded-up the Manson gang. Less well known is the large-scale Barker raid of September 30th, two weeks earlier. Probably because the raid was a total failure. They couldn't find a single Mansonoid.
"On Sept 29, (NPS Ranger)Powell, accompanied by California Highway Patrolman James Pursell, decided to check out Barker Ranch. They found two young girls there, but no vehicles. ... The officers had come looking for arson suspects, and a possible stolen vehicle. ... Before leaving Barker, Powell and Pursell decided to check out some draws back of the ranch. ... In so doing we stumbled into a group of seven females, all nude or partially so... We questioned the girls but received no useful information."
Brooks Poston interview by Inyo County Sheriff Don Ward October 3rd, 1969
"... Juanita was the only one left, as they had heard the Sheriff was coming up. And, Charlie sent a truck up to get a – all the people out, that he could – or that he wanted out. And he left Joan Wildbush and myself up there, to face the Sheriff...
.... there was a supply run made to Las Vegas. In which, Joan and the girl named Sherri went. And when they came back, there was a big hurry to get all the people out except Joan and myself. Because, as I was later to find out, the Sheriff was coming."
Ed Sanders' The Family, pg250:
"He(Manson) had concealed himself and his dune buggy in underbrush near the turnoff from Topanga Canyon Boulevard onto Santa Susanna Pass Road, awaiting the invasion of hostile forces."
--August 16, 1969 Spahn raid. The cops moved it up a day, because they feared Charlie had gotten advance intel on the raid.
Manson's Hinman/Shea trial, Oct '71
LADA files Box54-4 pg603 Testimony of LASO Dep. Preston Guillory
"The raid was supposed to take place on Sunday morning, but it was moved up, because we were told that members of the ranch--or somebody--had knowledge of the raid, and that they may have made efforts to pull out or to fortify further."