1937-40年各地高校寄国外公函封3件,分别贴帆船或各版孙像邮票,包括苏州萃英中学,上海真如华夏大学等,其中一件销37年6月15日江苏真如车站日戳,整体保存完好ChinaCollections and RangesPostal History1937-40 School covers to USA x 3, bearing different franking, included 1927 (15 Jun.) Chen Ju Station c.d.s., all in good condition.