Crack work from Dickinson after cold month (6)

I haven't cracked this one yet — but the brilliant team at Fifteensquared have:

ODE (work from Dickinson: I assume Mog means the US poet Emily Dickinson, though I don’t know if she called any of her work an “ode”) after DEC (abbreviation for December, which is a cold month if you’re in the Northern Hemisphere). Crack = decode = to solve a cypher or a puzzle.