It's almost certainly a hoax, but any book substitution cipher is very sensitive to errors both in counting, and in exactly which book. From that perspective, if you remove the spaces, it's almost intelligeble even to a non native speaker. Observe:

  ihaiedeposotedinthecopnttolBedoortaboupfourmilesfrombulordsinanepcaiationoriaultsipfestbelowthesurlacsofthhgtoundthsfotlowingarticissbeaongingjoiotlttothepartfeswhoslnamfsategiietinnumberthr ffhttewith

i haie deposoted in the copntt ol Bedoort aboup four miles from bulords in an epcaiation or iault sip fest below the surlacs of thh gtound ths fotlowing articiss beaonging joiotltto the partfes whosl namfs ate giiet in number thrffhtte with

I have deposited in the county of Bedoort (Bedford?) about for miles from bulords in an epcaiation or vault/fault six feet below the surface of the ground.

Supposedly epcaiation is excavation, that one I didn't get. Some of the latter parts I also have trouble reading without guessing a lot. Like 'joiotltto' and 'thrffhtte'.