IPE 邀請函

Helen Northrop Warner致台北工程師節舉行之京張鐵路展覽－回顧詹天佑年少赴美求學..

iedm Technical Program Chairman, A. U. Mac Rae, 致..

IEEE Transactions on Eletron Devices的Editor, Step..

International Journal of Electronics的Editor, P. A..

Melvin N. Zimmer & Hy Miller of The Assembly 致賀信函..

Sueling Li 致 T. C. Tsao, K. Y. Pao等人信函－Foundation..

Syracuse University Melvin A. Eggers 致 David K. C..