Over here you will find free vector brand logos in Illustrator, EPS, Corel Draw format..

Brand Vector Logos start with 'C' letter

CNN politics
Cmedia
Clue
Coronel Daza de Banda de Varela Catamarca
Clodomira de Santiago del Estero
Central Argentino de La Banda Santiago del Estero
Constructionline
Chas
Central Norte de Metán
Crkveni hor Biseri
CSCA-Rapid Ghidighici