Starting next Monday, a coalition of local groups will run a monthlong advertising campaign in a dozen Manhattan subway stations with the slogan “A Million New Yorkers Are Good Without God. Are You?” Theposters also advertise the Web site BigAppleCoR.org, which provides a listing of local groups affiliated with the Coalition of Reason, the umbrella organization that coordinated the campaign.

The campaign — which is being paid for by $25,000 from an anonymous donor — follows a similar but unrelated monthlong campaign on buses by New York City Atheists in July. Jane Everhart, a spokeswoman for the New York City Atheists, said that campaign was highly successful and brought in many new members. “We are trying to raise money to do it again,” she said.