This visualization presents bibliographic information from forty-five individual copies of vernacular books of Korean poetry published between 1921 and 1929. The data are from Wayne de Fremery, "How Poetry Mattered in 1920s Korea" (PhD diss., Harvard University, 2011). The technology we use to present this data was initially developed by Microsoft and utilized Microsoft's Silverlight plug-in. Here we use HTML5. Many thanks to Natasa Milic-Frayling at Microsoft Research Cambridge (UK) for helping to create the first version of this presentation, which is still available. Thank you to Howie Lan at UC Berkeley for his help developing this HTML5 version. To see the visualization in its own window click here. A similar interactive bibliography of periodicals in which Kim So-wŏl published his poetry will appear shortly.