- Ca. mid-1980s
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- "“Klinik.” 5 St. Mark’s Place, north side, east of 3rd Avenue" Village Preservation (GVSHP) Image Archive, accessed Jul 31, 2021, https://www.villagepreservation.org/ia_image/klinik-5-st-marks-place-north-side-east-of-3rd-avenue/.