Collection of coronal structure widths and locations by wavelength (171, 193, 211 and 304 Angstroms) for active region and plume structures in Solar Cycle 24 using Solar Dynamics Observatory (SDO) Atmospheric Imaging Assembly (AIA) data, and local coronal brightenings in Solar Cycle 23 using the Solar and Heliospheric Observatory (SOHO) Extreme-ultraviolet Imaging Telescope (EIT). Also contained is the COronal Structure Detection and Analysis (COSDA) software developed to extract these features from raw image data, written in Python 3.