There are photos from August 77. One of them is as he visited the cemetery because of his mother and others are with Lisa Marie. The "famous" last one and very good shot from 12th (?) August 1977 as he returned back from cinema to Graceland.... I recently asked almost the same question, about the gap between June 77 and some shots from August 77. There is probably no photo from July 77 (or better to say I´ve never seen any).