We present a study of 66 barred, early-type (S0-Sb) disk galaxies, focused onthe disk surface brightness profile outside the bar region and the nature ofFreeman Type I and II profiles, their origins, and their possible relation todisk truncations. This paper discusses the data and their reduction, outlinesour classification system, and presents $R$-band profiles and classificationsfor all galaxies in the sample. The profiles are derived from a variety of different sources, including theSloan Digital Sky Survey (Data Release 5). For about half of the galaxies, wehave profiles derived from more than one telescope; this allows us to check thestability and repeatability of our profile extraction and classification. Thevast majority of the profiles are reliable down to levels of mu_R ~ 27 magarcsec^-2; in exceptional cases, we can trace profiles down to mu_R > 28. Wecan typically follow disk profiles out to at least 1.5 times the traditionaloptical radius R_25; for some galaxies, we find light extending to ~ 3 R_25. We classify the profiles into three main groups: Type I (single-exponential),Type II (down-bending), and Type III (up-bending). The frequencies of thesetypes are approximately 27%, 42%, and 24%, respectively, plus another 6% whichare combinations of Types II and III. We further classify Type II profiles bywhere the break falls in relation to the bar length, and in terms of thepostulated mechanisms for breaks at large radii ("classical trunction" of starformation versus the influence of the Outer Lindblad Resonance of the bar). Wealso classify the Type III profiles by the probable morphology of the outerlight (disk or spheroid). Illustrations are given for all cases. (Abridged)
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