is there a poster for the beatles concert at dodger stadium(chavez
ravine) on august 28,1966? please advise and thanks
lee harris

Unfortunately, there appears to be no mention of a Beatles poster from
the Dodger Stadium concert at any of the beatles fan/memorabilia sites
or on the various poster selling stores.
The only memorabilia available from that concert is a stub of the
ticket for that concert, currently on auction at EBay.
If you are an interested collector, this might be of help.
   EBAY Auction : BEATLES - 1966 concert ticket 
   ( http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=917650372 )
Here is some information on these tickets :
   RareBeatles.com - Unique Beatles Rarities
   ( http://www.rarebeatles.com/photopg7/krla.htm )

I hope the above was of some help to you. 
If you need any clarifications, just ask!
:)