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While no single "Dean Family Book PDF" specifically covering North Carolina and Edgefield, South Carolina, was found, several online genealogical resources document Dean families in these areas and provide details about migration patterns. The search results detail connections between Deans, Echols, and Abney families that originated in Virginia before moving to the Carolinas. 
Dean family connections and genealogy resources
Virginia roots: The Dean, Echols, and Abney families were intertwined for generations. The Deans moved from Henrico County, Virginia, to Halifax County, Virginia. From there, branches of these families migrated to both North and South Carolina.
Migration to the Carolinas: Some Deans settled in the Spartanburg and Edgefield districts of South Carolina. This migration often happened in conjunction with related families like the Echols and Abneys.
Edgefield, South Carolina, Deans: A 2015 public research report from Legacy Tree Genealogists mentions a Dean line descending from Richard Dean, who was the common ancestor of a branch in Edgefield, South Carolina. One descendant, William F. Dean (b. 1807), was confirmed to be part of this line through DNA testing. WikiTree also documents a George Dean, Jr. (1791–1862), who moved from Edgefield to Alabama by 1850.
Spartanburg, South Carolina, Deans: FamilySearch provides details on John Dean (1776–1852), born in Guilford, North Carolina, who married in Spartanburg, South Carolina, in 1797 and died there. A WikiTree profile also notes that after Charles Dean died in North Carolina in 1798, his widow and children, including a son named Joel, moved to Spartanburg County, South Carolina.
North Carolina Deans: Ancestry.com notes that in 1840, 52% of all Deans families in the U.S. were located in North Carolina, highlighting the family's significant presence there. Several Dean family bible records are also available through the North Carolina Digital Collections.