| 1731 |
 |
July 1: Benjamin Franklin and others found the Library
Company of Philadelphia |
| 1825 |
|
Northwest Square renamed Logan Square for William Penn's secretary,
James Logan |
| 1833 |
|
April 9: Citizens of Peterborough,
New Hampshire found first free public library in the United States |
| 1864 |
|
 SS.
Peter and Paul Roman Catholic Cathedral by architects Napolean
Le Brun and John Notman is completed |
|
|
 June:
The U.S. Sanitary Commission hosts the Great
Central Fair at Logan Square to support Civil War troops |
| 1868 |
|
December 28:
Architect Horace Trumbauer born in Philadelphia |
| 1876 |
|
American Library Association founded in Philadelphia |
|
|
Library Journal founded |
|
|
First edition of the Dewey Decimal Classification System published |
| 1881 |
|
April 30: Architect Julian
Abele born in Philadelphia |
| 1883 |
|
Horace Trumbauer enters architecture profession as an errand
boy in the office of G. W. and W. D. Hewitt |
| 1884 |
|
 April
29: New Jersey real estate
developer Charles K. Landis issues a plan for a boulevard from
City Hall to the entrance to Fairmount Park, later dubbed the
Fairmount Parkway |
| 1887 |
|
The Commonwealth of Pennsylvania authorizes the creation and
regulation of municipal libraries |
