Example field centered at (ℓ, b) = (324.0°, −0.2°). Top: Spitzer three-color data, with MIPSGAL 24 µm data in red, GLIMPSE 8.0 µm data in green, and GLIMPSE 3.6 µm data in blue. Middle: 1.3 GHz SMGPS data. Bottom: 1.3 GHz SMGPS data in red, MIPSGAL 24 µm data in green, and GLIMPSE 8.0 µm data in blue. White circles show HII regions from the WISE Catalog (Sect. 2.3), blue-green circles previously known SNRs (Sect. 4.1), green circles previously known SNR candidates (Sect. 4.2), light green circles SNR candidates newly identified here (Sect. 4.3), and yellow circles “unusual” sources (Sect. 4.4). Although there are no examples in this field, in subsequent figures we show misidentified or undetected SNRs and SNR candidates with dashed circles.