This select statment

select sites.permid as permid, sites.site_name, sites.startdate, sites.enddate, ;
	pei.*, GetERInitials(sites.er) as ER,  ;
	h.surveys_distributed ;
	from newbluebook!sites ;
	left outer join new_pe_pei_database!PEI ;
		on sites.permid=pei.permid ;
	left outer join newsurveys!history h;
		on sites.permid=h.permid ;
	where ! isblank(startdate) and isblank(enddate) and ;
	pei._year = lnYear and ;
	h._year = lnYear-1 ;
	order by sites.er, site_name ;
	into cursor crsReport	

misses records where there is no matching history record. I thought the outer join would include ALL of the qualified sites records but this is apparently not the case. What do I have wrong?