It depends on where you are. There is no national handgun registration and only a handful of states require it.
http://oregonfirearms.org/store/uorlbk.html
It depends on where you are. In the U.S. only a very few states require registration.
At least 7 years for Income Tax purposes.
NJ requires licensing of handgun owners, and police approval of all transfer of ownership of handguns. You need to discuss transfer on an inherited handgun with the NJ State Police.
Pennsylvania does not have registration of ordinary firearms. There is no place or procedure to register a gun, whether inherited or not.
No. You do not have to register any weapon in Missouri. The only permit needed in Missouri is the permit to carry a concealed weapon.
You MAY be able to get it from the dealer that sold the handgun. In most of the US there is no process to register handguns with any government agency, but the dealer ertains a copy of the sales paperwork. You would need to know which dealer, and when the gun was purchased.
you will need to go to the bmv and file for lost or stolen title, it title is in previous owners name, how to transfer in my name if owner is deceased.
yes, you do need to register for college.
Your question lacks important details. You need to contact an attorney in your jurisdiction who specializes in probate law who can review your situation and explain your options.
You can not carry an unconcealed handgun in Texas with or without a license.
There is no such thing as registration, except in a few states and Kansas is not one of those states. So, you can't. Since there is no such thing as registration, there is no way to register the gun. In other words, there is no such thing as "needing to" or "not needing to." It's not possible because it doesn't exist.