| Record Group | Series | Box | Folder Title | 
| C-9.1-HLB | 4 | 1 | Letters about Milwaukee Industrial, Dental Clinic, 1921-1924 | 
| C-9.1-HLB | 4 | - | Correspondence | 
| C-9.1-HLB | 4 | 1 | 1920-1923 | 
| C-9.1-HLB | 4 | 1 | 1924 | 
| C-9.1-HLB | 4 | 1 | 1928 | 
| C-9.1-HLB | 4 | 1 | 1929 | 
| C-9.1-HLB | 4 | 1 | 1930 | 
| C-9.1-HLB | 4 | 1 | 1931 | 
| C-9.1-HLB | 4 | 1 | 1932 | 
| C-9.1-HLB | 4 | 1 | 1933 | 
| C-9.1-HLB | 4 | 1 | 1934 | 
| C-9.1-HLB | 4 | 1 | 1935 | 
| C-9.1-HLB | 4 | 1 | 1937-1940 |