581 are the flashbulbs for one use only? will old ones explode or anything i should be concerned with? how are press 25 different from 25b? the blue ones are safer? is it true you can use 120 film if you use a 620 take up spool? what else? 30 2009-10-02T19:20:34Z 0 2009-10-02T19:54:34Z true 30118 false 3462 2009-10-10T15:01:11Z New York true 2010-04-02T00:00:00Z false brownie-hawkeyewhaddyaknow 1 2009-10-10T15:01:11Z 3482