Analysis of the main entry for official publications emanated from the nominated Presidents. The Colombian case was used to study the correct form of main and secondary individual entries. It was also studied problems presented by LC classification scheme in relation to Colombian historical periodization and subject headings used to represent presidential nomination. It was found violation of historical periodization, no use of corporative entries for dictators but its use as subject headings, variation in the forms of use of them, and lack of normalization. An extensive listing of Colombian Presidents is offered in an annex, as a way to facilitate the librarian labor.