Radio morphologies and spectra of compact radio sources with the steepest spectra

We have assembled a complete sample of 74 compact (theta less than or equal to 25 ") radio sources visible from the northern hemisphere with spectral indexes 1.5 less than or equal to alpha less than or equal to 3.2 (where S- nu proportional to nu(-alpha)) and 365 MHz flux densities S greater than or equal to 200 mJy These sources were selected from two large-scale radio su rveys: the 1.4 GHz NRAO VLA Sky Survey and the 365 MHz Texas survey, which together cover almost 80% of the sky (-35 degrees 30' less than or equal to delta less than or equal to 71 degrees 30'). We present here high-resoluti on images for the sources and spectra compiled from our data and other surv eys. We attempt to classify these sources based on morphology and size dete rmined by additional radio observations using the Very Large Array. We cann ot definitively classify the majority of the sources based on these data, b ut statistical arguments suggest most are distant radio galaxies. A small n umber of previously unknown pulsars may also exist in our sample.