It's off to Washington, D.C. for Cambridge city councillors this week, as they head south for the National League of Cities conference.

All of the councillors except for Anthony D. Galluccio will be attending the four-day conference, along with four or five thousand other city councillors and mayors from around the country, said Mayor Francis H. Duehay '55.

Duehay, who was elected to the board of directors of the National League of Cities, says he will be busy during the trip.

"I will be meeting almost non-stop, Saturday, Sunday and Monday with the board of directors," Duehay said.

Duehay, a long time veteran of the National League of Cities, used to chair the Committee on Economic Development.

"I'm kind of a senior member now," he said.

Duehay hopes to meet with the vice president of the U.S. Postal Service to discuss the acquisition of the Central Square Post Office, which the council would then turn into a public library.

Duehay is also trying to arrange a meeting with Secretary of Housing and Urban Development Andrew Cuomo to discuss housing and homelessness. In particular, Duehay would like to talk to Cuomo about expiring use, the recent phenomenon of making available houses once reserved for affordable housing to market pricing, which has led to many evictions in Cambridge.

Other councillors have signed up for a variety of workshops on topics ranging from leadership to budgets.