Dust continuum emission maps of IRAS 4A at 95.85–99.45 GHz (Setup 3, see Table 1). Contours start at 3σ and increase by steps of 20σ, with σ = 1.5 mJy beam⁻¹. The synthesized beam (~2″) is represented in white in the lower right corner of the panel, the primary beam (~ 52″) is shown with a dashed white circle. The millimeter continuum sources in the field are labeled following the nomenclature used by Choi (2001) for 4A1 and 4A2 and Di Francesco et al. (2001) for B and B′.