WHITE HOUSE DATA AND DEAN'S DIFFER ABOUT WATERGATE
By David E. Rosenbaum Special to The New York Times
White House acct of Pres Nixon's conversations with ex-White House counsel J W Dean 3d charges that Dean, despite constant pressure from Pros, withheld from Nixon all information about White House involvement in Watergate burglary and cover-up until Mar 21; summary prepared by attys on Sen Watergate com of their interrogation of Dean on June 16 contains material bearing on Dean's assertion that Nixon knew about cover-up plot as far back as Sept; much of evidence against Nixon that Dean gave com staff is hearsay, according to summary, but Dean told of some direct conversations with Nixon in which aspects of cover-up were discussed; Dean's account refers to request to meet with Nixon Mar 21 'to tell the Pres all he knew' about Watergate, but com's summary does not indicate whether Dean did so; new allegations charge former White House counsel C W Colson and former White House aide J D Ehrlichman with seeking permission from Nixon to promise exec clemency to Watergate conspirator E H Hunt Jr; Dean says he 'heard this' from Colson and later this spring had 'discussion with the Pres' about clemency offer; that Dean was instructed by Ehrlichman and former White House chief of staff H R Haldeman to enlist aid of CIA Deputy Dir Walters in covering up Watergate conspiracy; Dean's acct is that White House aides said that Walters 'owed his allegiance to the White House' but that CIA official had declined to help; White House acct, prepared by special counsel to Pres J F Buzhardt Jr, contains White House's version of substance of 18 meetings this yr between Pres and Dean; Dean and White House have agreed that there were more than 35 discussions between Nixon and Dean between late Jan and Apr '73, some face-to-face, some by telephone; acct says that from Mar 1 to Mar 23 Nixon and Dean met about Watergate affair almost daily; says that Dean, in response to Nixon's questions, repeated often that there was no White House involvment in burglary or cover-up; says that Nixon was told by Dean on Mar 13 that G Strachan, then top asst to Haldeman, 'could be involved'; says it was not until Mar 21 that Dean told Nixon that J S Magruder, J N Mitchell and Strachan probably knew, that Haldeman had possibly seen fruits of wiretaps through Strachan and that Ehrlichman was vulnerable because of his approval of Kalmbach's fund-raising efforts; summary presents vivid picture of widespread attempts within upper reaches of White House and Repub Re-Election com to cover up magnitude of Waterate case; Dean accuses Haldeman of having ordered destruction of information obtained from Watergate wiretap, of having joined in planning efforts to obtain White House influence over Repub members of Sen investigating com members and of attempting to persuade ex-Atty Gen Mitchell to 'take the heat' off other officials by assuming blame for Watergate break-in; Dean says, in summary, that Ehrlichman had instructed him to throw wiretapping equipment 'in (the) river' after material was discovered in Hunt's White House safe; summary alleges that Dem ex-Chmn O'Brien was probed by White House as early as '70 and that Nixon special counsel R A Moore tried unsuccessfully in Feb to persuade Mitchell to raise funds for Watergate defendants; Dean illus