Why are there two different Spanish catalogs?
The two Spanish catalogs are titled “con articulos” and “sin articulos,” respectively. The first of these two catalogs includes the relevant article form (singular or plural, masculine or feminine) for all noun stimuli. The article appears both in the caption and in the audio caption. The second catalog omits the article. For purposes of phonology treatment you may wish to use the “sin articulos” catalog while you may prefer the “con articulos” catalog when treating lexical or morphosyntactic problems.