Madoff's massive paper trail has led investigators to a Queens warehouse used to store old records ....boxes and file cabinets stuffed with documents could reveal more clues....City finance records indicate that Bernard L. Madoff Investment Securities leased space in the Queens' Astoria neighborhood........he says he acted alone yet Madoff Securities was a close-knit family business that employed two sons, his brother and benefited his wife..... © 2009 The Associated Press. All rights reserved. This material may not be published, broadcast, rewritten or redistributed.