The table below shows the listings from the Chicago city directories.
| Year | Leslie Biggins | | |
| 1893 | P. Leslie
Electrician
h. 4818 Shields | | |
| 1894 | P. Leslie
Clerk, Swift’s stock yards
h. Naperville | | |
| 1895 | | | |
| 1896 | L.
Clerk, 243 Wabash
h. Naperville | | |
| 1897 | Leslie P.
Clerk, 243 Wabash
h. 6239 Bishop | | |
| 1898 | | | |
| 1899 | | | |
| 1900 | Leslie P.
Bookkeeper 1201, 188 Madison [Garden City Sand Co.]
h. 6923 Vernon | | |
| 1901 | Leslie P.
Bookkeeper 1201, 188 Madison | | |
| 1902 | Leslie P.
Bookkeeper 1201, 188 Madison
h. 501 School | | |
| 1903 | Leslie P.
Bookkeeper 1201, 188 Madison
h. 501 School | | |
| 1904 | Leslie P..
Bookkeeper 1201, 188 Madison
h. 501 School | | |
| 1905 | Leslie
Salesman
h. 1412 Dunning | | |
| 1906 | Leslie P.
Salesman 1201, 188 Madison
h. 1412 Dunning | | |
| 1907 | Leslie P.
Salesman 1201, 188 Madison
h. 1412 Dunning
| | |
| 1908 | Leslie P.
Salesman
h. 1412 Greenwood Terrace | | |
| 1909 | Leslie P.
Salesman
h. 1412 Greenwood Terrace | | |
| 1910 | P. Leslie
Salesman 317, 138 Washington
h. 950 Greenwood Terrace | | |
| 1911 | P. Leslie
Salesman 419, 133 W. Washington [Chamber of Commerce Building, George W. DeSmet]
h. 950 Greenwood Terrace | | |
| 1912 | P. Leslie
Salesman 419, 133 W. Washington
h. 950 Greenwood Terrace | | |
| 1913 | P. Leslie
Salesman 419, 133 W. Washington
h. 950 Greenwood Terrace | | |
| 1914 | Leslie
Manager 231, 175 W. Jackson Blvd. [Insurance Exchange Building, building material exhibit]
h. 950 Altgeld | | |
| 1915 | Leslie
Salesman 317, 138 Washington
h. 950 Altgeld | | |
| 1916 | Leslie
Salesman
h. 950 Altgeld | | |
| 1917 | Leslie
Water proofing 305, 22 Quincy [Baltimore Building]
h. 950 Altgeld | | |
| 1923 | Leslie
President, Central Ironite Waterproofing Co.
h. 950 Altgeld | Cath.
Stenographer, National Refining Co.
h. 950 Altgeld | |
| 1928 | Leslie
President-Manager, Central Ironite Waterproofing Co.
h. 2318 Sheffield | Kathleen
Stenographer, Chilton-Class Journal Co.
h. 2318 Sheffield | |