Letter dedicated to Ėĭdlin from Yu Pingbo
俞平伯致艾德林函
Letter dedicated to Ėĭdlin from Xu Baoxun
許寶馴致艾德林函
Postcard and its envelope dedicated to Ėĭdlin
俞氏伉儷致艾德林明信片及實寄封
Postcard and its envelope dedicated to Ėĭdlin
俞氏伉儷致艾德林明信片及實寄封