| Business and Company Records | Registers of Firms, 1903-1922 | 
| Bankruptcy and Insolvency | Insolvency - inability to satisfy creditors or discharge liabilities. Bankruptcy - similar but also involves the sequestration of a person's assets when they are unable to meet the demands of creditors. | 
| Buildings | |
| Botanic Gardens employees | |
| Bubonic Plague | A record of the Bubonic Plague that hit in Sydney of the early 20th century | 
| Bench of Magistrates | 
 
        