1.  1840 U.S. Census Index/Images (online at Ancestry.com):  Joshua's parents are living in Jackson Twp., Knox Co., OH (q.v.).

2.  1850 U.S. Census Every-Name-Index/Images (online at Ancestry.com):  can't find Joshua or his brother, James.  Was this just enumerator error?  Their parents are living in Waldo, Marion Co., OH (q.v.).

3.  1860 U.S. Census Every-Name-Index/Images (online at Ancestry.com):  Joshua M. CORBIN (æ 20, b. OH) is living in Waldo, Marion Co., OH, with his parents (q.v.).

4.  U.S. Civil War Soldier Records and Profiles, 1861-1865.  Historical Data Systems, Kingston, MA (online at Ancestry.com):

Name:	Joshua M. V. Corbin
Age at Enlistment:	21
Enlistment Date:	3 Jun 1861
Rank at enlistment:	Private
State Served:	Ohio
Survived the War?:	No
Service Record:	Enlisted in Company H, Ohio 4th Infantry Regiment on 03 Jun 1861. Mustered out on 28 Apr 1864 at Alexandria, VA.
Sources:	Official Roster of the Soldiers of the State of Ohio The Medical and Surgical History of the Civil War

5.  Civil War Soldiers and Sailors System.  National Park Service (online at www.itd.nps.gov/cwss/ and at Ancestry.com as U.S. Civil War Soldiers, 1861-1865):

Name:	Joshua M.V. Corbin
Side:	Union
Regiment State/Origin:	Ohio
Regiment Name:	4 Ohio Infantry
Regiment Name Expanded:	4th Regiment, Ohio Infantry
Company:	H
Rank In:	Private
Rank In Expanded:	Private
Rank Out:	Private
Rank Out Expanded:	Private
Film Number:	M552 roll 22

6.  Anon.  1893.  Official Roster of the Soldiers of the State of Ohio in the War of the Rebellion, 1861-1865.  12 Vols.  Werner Co., Akron (online at Ancestry.com):

Volume | page:	1 | 113
Regiment:	Fourth
Unit:	Ohio Volunteer Infantry
Company:	H
Name:	Corbin, Joshua M. V.
Rank:	Private
Age:	21
Date of Entering the Service:	June 3, 1861
Period of Service:	3 yrs.
Remarks:	Died at Alexandria, Va., April 25, 1864.

7.  Registers of Deaths of Volunteers, compiled 1861-1865.  ARC ID: 656639. Records of the Adjutant General's Office, 1780's-1917.  Record Group 94.  National Archives, Washington, DC (online at Ancestry.com).  In Box 42, on p. 47:

NAME		RANK	CO.	REGIMENT	DATE OF DEATH 1864	PLACE OF DEATH	CAUSE OF DEATH	REMARKS
SURNAME	CHRISTIAN NAME
Corbin	Joshua M V	Priv	H	4 Inf	Apl 29	3 Div G H Alex Va	Paralysis	Edwin Bentley S USA

8.  Interment Control Forms, 1928-1962.  Records of the Office of the Quatermaster General, 1774-1985, Record Group 92.  National Archives, College Park, MD (online at Ancestry.com):-

Name:	Joshua M.V. CORBIN
Rank | Service:	Pvt. | Co. H, 4th Rgmt., Ohio Infantry
Death Date:	April, 28, 1864
Cemetery:	Alexandria National Cemetery (Section A, Grave No. 1860)
Location:	Alexandria, VA

9.  Civil War Pension Index (index and images online at Ancestry.com):

Name of Soldier	Joshua M V Corbin
Name of Dependent	Widow
	Mother	Corbin, Elizabeth
	Father	Corbin, Elijah K.
Service	H 4 Ohio Inf
Date of Filing	Claim	Application No.	Certificate No.	State from which Filed
	Invalid
	Widow
1887 Jan 20	Mother	349,228		Ohio
1890 Jan 30	Father	413,599	328,922	Ohio

10.  Public Member Trees (online at Ancestry.com).

11.  WorldConnect / Ancestry World Trees (online at RootsWeb.com/Ancestry.com).