I found the following info:
no listing in Summer 1958 callbook
listed in Spring 1959 callbook as WV2CMG (novice class I believe)
download that page here:
http://www.riverwalk-hoa.com/WV2CMG_Call Area 2 - Spring 1959.pdf
listed in Fall 1961 as WA2CMG
download page here:
http://www.riverwalk-hoa.com/WA2CMG_Call Area 2 - Fall 1961.pdf
listed in Winter 1972-73 callbook as WA2CMG (Technician license- last listing that I have for WA2CMG)
listed in Winter 1973-74 - changed callsign to WA1RMY in Maine (last name is now Kassay)
listed in 1982-83 callbook as WA1RMY in Maine
download page here:
http://www.riverwalk-hoa.com/WA1RMY_Call Area 1 - Winter 1982-83.pdf
no listing in 1986-87 callbook, call area 1 & 2 for keywords "Yut", "Seul" & "Kassay"
Good luck.