Hidden throughout Kyrat are a variety of notes. Some of these are numbered, such as the Lonesome Planet notes.
Here are the locations of the Lonesome Planet notes that I have found, with some help from others in the FC4 community:
LP#1: 388/362.....LP#3: 725/674.....LP#4: 541/451.....LP#5: 289/527.....LP#6: 413/685.....LP#8: 489/783.....LP#9: 597/724.....LP#10: 782/722.
I have not been able to find LP#2 or LP#7.
Any help would be appreciated.