This is a series of E-Books available through the UNC-CH online catalog. Each volume is a compilation of actual business plans developed by small businesses throughout North America. There are 23 Volumes.
UNC-CH users only
https://catalog.lib.unc.edu/?Ntk=Title&Ntt=Business+plans+handbook&Nty=1&f%5Baccess_type_f%5D%5B%5D=Online&page=1&per_page=50&q=%22business+plans+handbook%22&search_field=all_fields&sort=publication_year_isort+desc%2C+title_sort_ssort_single+asc&sugg=i