There’s been a great deal written in Lehi’s Dream of the Tree of Life. Two new books on the subject were published in 2011:
Belnap, D., G. Strathearn and S. Johnson, eds., The Things which My Father Saw: Approaches to Lehi’s Dream and Nephi’s Vision (Deseret Book: 2011).
Welch, J. and D. Parry, The Tree of Life: From Eden to Eternity (Neal A. Maxwell Institute for Religious Scholarship, 2011).
Here is a bibliography of the most important studies on Lehi’s Dream.
Studies of attempts to correlate Lehi’s Dream with Izapa Stele 5 are here:
Let me know if there is anything major studies I missed and I’ll update these files.