Linguistic Atlas of the Iberian Peninsula

[1][2][3] Navarro Tomás directed its work from the Center for Historic Studies, part of the Junta para la Ampliación de Estudios which was the precursor to the modern Spanish National Research Council.

[1] Three different teams of interviewers took on the job of collecting the data corresponding to hundreds of different questions in 527[4][5] survey points, generally small towns, previously selected in order to cover in the most complete way all the Romance-speaking areas of the Iberian Peninsula, Roussillon, and the Balearic Islands.

In each survey point (town or village) two informants were typically chosen, one for the study of phonetics and morphosyntax and the other for the part involving lexicon.

Starting in 1999, David Heap, professor at the University of Western Ontario, made photocopies of the notebooks and published them online (see External links).

The ALPI's web page presents the history of the project, describes its methodology and online publication, and includes easy access to data from the linguistic surveys.