A sympathy card from Walters Realty president Bob Merritt to the wife of recently deceased realtor Jim Nolfo was chosen, signed, and mailed by Merritt's personal assistant Monday. 'Please know that you are in my thoughts during this difficult time,' the assistant wrote on Merritt's behalf. Merritt, who did not see the card at any time during the three hours it spent in the Walters Realty office, did not add, 'Let me know if I can help in any way.' 