Storing autographed baseball

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Posted By: George Dreher

Mike, you said that the balls are stored in a cool dry closet. Is there any chance that the humidity is getting above 70% in the summertime inside the house? Do you ever open the windows and let outside air into the home? Also, is there carpet or a bare floor in the closet?
I have over 1,000 official NL & AL single signed and team signed baseballs in a cool dark dry closet with carpeted floor. No windows are ever opened in the adjoining room. Air conditioned low humidity environment. Gas heat in the winter. Temperature stays between 60 and 75 degrees all year round. Balls were signed and then placed back in their original factory boxes wrapped in tissue paper, some in storage for more than 40 years. Factory boxes are stacked on top of each other inside of larger cardboard boxes. About 100 baseballs per large cardboard box.