I found a document on ancestery where Isaac assigned his "Warrant of Survey" to Simon Dewitt Esq Surveyor General on March 23 1793. It is attached to his 7913 warrant dated March 14 1793. If you are unable to find it and would like a copy I have saved it to my computer and can e-mail it to you. Just send me a note at arkretired@hotmail.com Arlene