A growing segment (current estimates are 10% or more) of the U.S. population relies solely on cell phones for persona! telephone communication. The rise of the cell-only household poses the threat of bias to research conducted by telephone since its demographics cell-only households tend to skew younger, less affluent, and less educated than the landline households), cooperation rates and often times psychographic and lifestyle habits vary substantially from the landline household and in some cases, cell-only households are left out of surveys and polls altogether. This paper presents the results a study conducted with 2 cells: one in which data was collected using RDD sampling, representing only households having landlines; and another in which RDD sampling was augmented by cell phone only household members of a survey panel, enabling cell-only households to respond in addition to landline households. In the second cell, RDD sample was combined with pre-identified cell-only members of an online panel who received either an email invitation or a mobile text invitation. Panelists responded by calling in to a live operators take the survey using their cell phone. The study illustrates how multiple sampling sources can be used 1o achieve representative samples.