Re: the deadletters at GWB.org, I found a firm which does "caging".

[henslee]

Found term used on "Southwest caging" website... Not quite sure how it pertains to FLA though. Here is excerpt Southwest caging's their "what we do" link...

"Since 1988 when we began as Southwest Caging. SW Caging has focused on providing the highest quality caging services to nonprofit organizations and their professional fundraisers. We expect the best from ourselves, and for over 15 years we have been committed to providing Fast, Accurate and Exceptional direct mail processing.

Charities both large and small have benefited from SW Caging's high level of service. We provide a high level of service because we have dedicated ourselves to becoming the best caging agency in America. We don't engage in creative design, printing or lettershop services. We don't sell mailing lists or involve ourselves in fundraising management. No, we do just one thing - caging."

Our goal is Fast, Accurate, Exceptional processing of your donations. Our growth over the years shows that we are reaching our goal.