Since 2013, University Press of New England and editor Richard Miller have been publishing their States at War series, which is currently at five volumes.
• States at War, Volume 1: A Reference Guide for Connecticut, Maine, Massachusetts, New Hampshire, Rhode Island, and Vermont in the Civil War
• States at War, Volume 2: A Reference Guide for New York in the Civil War
• States at War, Volume 3: A Reference Guide for Pennsylvania in the Civil War
• States at War, Volume 4: A Reference Guide for Delaware, Maryland, and New Jersey in the Civil War
• States at War, Volume 5: A Reference Guide for Ohio in the Civil War
The description to the first volume hints at the breadth involved: "Its principal sources include the Official Records, state adjutant-general reports, legislative journals, state and federal legislation, federal and state executive speeches and proclamations, and the general and special orders issued by the military authorities of both governments. Designed and organized for easy use, this book can be read in two ways: by individual state, with each chapter offering a stand-alone skeletal history of an individual state’s war years, or across states, comparing reactions to the same event or solutions to the same problems." Also, there's a table of contents for it on the publisher's site and a rather extensive Google books preview.
The series started in the northeast and trickled down the Atlantic seaboard before dipping its toes into the Midwest. For the upcoming Volume 6, Miller is switching gears to the South with States at War, Volume 6: A Reference Guide for South Carolina and the Confederate States Chronology during the Civil War (January 2018).
I've never personally encountered these volumes anywhere. If you've used any of them at length in your research, please add your thoughts on the experience in the comments section. I would be interested in your opinion.