This book aims to reconstruct the history of Colombian commercial law not from normative sources, but from sentences of cassation issued by the Supreme Court of Justice. The work presents the analysis of what could be called commercial jurisprudence since the Constitution of 1886, which gave jurisdiction to the Supreme Court of Justice to overturn the sentences handed down by the Superior Courts of the Judicial District, and through this resource to unify parameters for the interpretation of legal norms at the national level. The research was extended until 1916, since that year was the 25th anniversary of the Gaceta Judicial and because during these thirty years the Commercial Codes of 1887 remained almost intact in their content, except for a few norms that were added to them.