The account book, titled "Grand-Livre" on its cover, includes single or double page entries for each of the firm's customers. Each entry shows the name of the customer, the date that merchandize was purchased or paid for and the amount of the transaction. No detail as to the nature of the merchandize is included. Entries for customers living outside New Orleans also note their place of residence. Among the names noted in the volume are the Widow Paris (better known as Marie Laveau), Pierre Casenave (a prominent African American undertaker), Francois Lacroix (a wealthy African American businessman), and Armand Lanusse (African American poet and compiler of Les Cenelles, a collection of poetry penned by African American writers). Not all of the firm's patrons were black, however. Judge Joachim Bermudez and attorney Armand Pitot are among the white customers doing business with Barriere.