Inland Empire has two big chunks of land off of Elder RD. The only one that you can get to is Starr RD without permission from some of the private land owners. Park at the bottom of the gate and walk about 1 1/2 miles and you'll hit paper land. You need to buy a permit too, which you can at White's. Once you hit paper land- the farther back you go the less people you see- if you have a bicycle that helps. Haven't hunted late season there- I saw some good deer there this spring turkey hunting.
The other chunk owner by IEP can be accessed of of Elder too, but, like I said, you have to get permission from somebody adjacent. The folks closest to it are anti-hunters. I have a friend that has access and has seen lots and lots of elk there because it's rarely accessed. Both are worth a shot if you can either get back farther or get permission.
Best of luck.

There is a small chunk of State Land there- but it's only about a mile square- also off of Starr Rd.