When address envelopes and postcards to CESD, is that appropriate, or should it say "Cunningham Escott Slevin Doherty"?

CESD is fine

You could do it either way. You may already plan to do this, but it would be ideal to address it to a specific agent as well- that way it is given to someone individually instead of going in the "general" mail pile. Lakey Wolfe, from CESD, told me that submissions without an agent's name take much longer to get opened, and may not end up on an agent's desk.

Good luck!

Yeah, I have "Attention:" for the specific agents, but thanks for the CESD part!