June-July 1940, Vol. 5 No. 6-7 of Junior Echo newsletter, published monthly by Lodge Junior American Czech No. 388, C.S.A., 6 pages
Lodge Junior American Czech No. 388, C.S.A.
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Is Part of Junior Echo series: http://n94038.eos-intl.net/N94038/OPAC/Details/Record.aspx?BibCode=5424972
Lodge Junior American Czech No. 388, C.S.A., “Junior Echo,” NCSML Digital Library, accessed April 18, 2021, https://ncsml.omeka.net/items/show/1111.