Lots happening this day …

The Yale lock was patented this date in 1851.

 

 

 

 

The Paris Exposition opened this date in 1889 with the just completed Eifel Tower.

 

 

 

 

 

This date in 1937, the dirigible Hindenburg exploded into flames at Lakehurst, N.J.

 

 

 

This is National Nurses’ Day