余東旋 Eu Tong Sen

余東旋有限公司成立於1930年代初，由余東旋先生創辦，他是余廣培先生（余仁生創辦人）的獨子。該公司是一家物業管理公司，主要處理余東旋在東南亞和香港各地土地和房產的開發、買賣和租賃等業務。

《香港華商特藏》保存了該公司在1930－1960年間的商業文檔包括財務文件、審計報告、銀行對賬單、租賃帳本、稅務記錄、發票和收據、信函、公司文物（三個公司印章）等，另有一些與家族相關的物品。此外還包括在1960年代初期該公司自願清盤時與結算人之間的通信記錄。

Eu Tong Sen, Ltd. was established up by Eu Tong Sen, the only son of Eu Kwong Pui, the founder of Eu Yan Sang, in early 1930s. It was a property management company that dealt with the developing, buying, selling and renting matters of large amounts of land and property owned by Eu Tong Sen at various locations in Southeast Asia and Hong Kong. Materials include business-related documents such as financial papers, auditor’s reports, bank statements, rent books, tax records, invoices and receipts, letters, artifacts (3 company stamps) etc. and some family items covering the period from late 1930s to mid 1960s. A collection of the correspondence between the company and the liquidator when Eu Tong Sen Ltd. went into voluntary liquidation in early 1960s is also included.