Whether researching the 1860 General Laws of Kansas or a 1720 law from Virginia, the HeinOnline Session Law Library is the best starting point for researching state legislation.

Since 2007, HeinOnline has been digitizing the official bound session laws for all 50 U.S. states, Puerto Rico and the Virgin Islands. The D.C. Register and the U.S. Statutes at Large are also included in this collection on HeinOnline. Currently, session laws from all states are available from the state's inception through the latest official bound version and the libraries are updated on a regular basis as new session laws are published by each state.