Las Haciendas de Arecibo: Expediente de las Visitas a las Haciendas de 1841 is an essay included in the 2016 publication Hereditas by the Puerto Rico Genealogy Association. It is a transcript of the records of the local government visit in 1841 to several haciendas in the municipality of Arecibo to verify the condition and treatment of salves.  One of the haciendas visited and included in the essay is Hacienda La Carrera owned at the time by Italian immigrant from Genoa Antonio Iguina, being its overseer Nicolás Barbier. Daniel Mora Ortiz, the author of the essay, adds a footnote stating that based on the 1877 map included in the gallery below, Hacienda La Carrera was then known as Hacienda Plantaje, not to be confused with Hacienda El Plantaje in Toa Baja. It has not been verified but Antonio Iguina or one of his descendants was most likely one of the investors who promoted Central Alianza.

BY 1901 Hacienda Plantaje was no longer in operation as a sugar factory and it is not included in José Ferreras Pagán 1902 book Biografia de las Riquezas de Puerto Rico.  This fact is verified in the Hacienda Fortuna page which states that by 1901 Pedro Amador and two of his ten surviving sons, Pedro Gerónimo (1879-1930) nicknamed Perico and Demetrio (1886-1939), improved the two hundred ninety seven cuerdas Hacienda Fortuna installing a steam powered steel mill, boilers and an Egrot still from the former Hacienda Plantaje in Arecibo.

After 1901, it is very likely sugarcane grown in its lands were processed at the nearby Central Los Caños. The aerial pictures below were taken and made available the courtesy of Carlos Alemán.