The Indiana Civil Rights Law is found in Title 22, Article 9 of the Indiana Code. Within Article 9, those chapters relevant to employment discrimination include:

• Chapter 1: Civil Rights Enforcement
• Chapter 2: Age Discrimination
• Chapter 5: Employment Discrimination Against Disabled Persons
• Chapter 8: Appeals; Exhaustion of Administrative Remedies

The links above are to the unannotated versions available for free from the Indiana government website. Free is good, but for deep research, it is much better to use an annotated code. I highly recommend that you use the Indiana Codes available through Westlaw and Lexis for research purposes.

Anytime you're working with a statutes, remember to check that it is the most current version and whether there is any proposed legislation that might affect it.

A brief history of Indiana's civil rights law is available here.

The Indiana Civil Rights Commission is tasked with enforcing the Indiana Civil Rights law. More about the commision's work against employment discrimination and the process of filing a complaint is available here.

Regulations issued by the ICRC are found in Title 910 of the Indiana Administrative Code. Those relevant to employment discrimination are found in Article 1 and Article 3.

For issues dealing with labor and employment law rather than discrimination, go to the Indiana Department of Labor.

To find employment discrimination laws in other states:

1. An effective first step beginning is to run a Google search for: "employment discrimination" {state name}. This is likely to turn up the state agency tasked with enforcing employment discrimination laws, and agency websites usually have links to the relevant statutes and regulations. 
2. The next step is to use an annotated statutory code on Westlaw or Lexis. Annotated codes give you citations for cases interpreting and applying the laws, related statutes, and even secondary sources.

Cities and other municipalities may have employment discrimination laws as well. The best online source for municipal codes is Municode.com. You can search Municode for Indianapolis's municipal code and others.