Below listed are the selections for the United States Collaboration of the Month and how they were improved.

• Note: Prior to the reboot in February 2011 it was called the Collaboration of the Week. In 2011 it was changed it to be a monthly collaboration.

In February 2011, WikiProject United States relaunched the United States Wikipedians' Collaboration. Rather than a weekly collaboration it was decided to extend the time period to monthly, allowing more editors to participate and more time to expand the articles.

Date	Title	Votes	Edits	Improvement	Status	Additional comments
February 2012	United States Postal Service	4		108,149 to	to
January 2012	The Star-Spangled Banner	3	35	39,732 to 39,870	to	Even though the size of the article didn't change much several significant chanegs were made to clean up the article
December 2011	Hope Diamond	2	3	97,283 to 97,308	to	Only a few edits to the article.
November 2011	99 Percent Declaration	1	335	9,146 to 8,868	to	alternate winner, Hope diamond cursed and COTM not updated for two months
October 2011	Not updated	NA	NA	NA	NA	NA
September 1, 2011	Chicago	3	154	~15 kilobytes	to
August 1, 2011	Space Shuttle program	5	8	36,088 to 36, 180	to	former GA candidate in 2006
July 1, 2011	United States dollar	4	32	64,119 to 64,355	to	Some improvements were done but still needs a lot of work
June 1, 2011	United States Bill of Rights	4	41	51,656 to 75,006	to	Expanded but still needs a lot of work
May 1, 2011	Wall Street	4	74	24,234 to 91,912	to	Tomwsulcer did a major rewrite and expansion of the article while it was a nomination.
April 1, 2011	Chesapeake Bay	8	24	29,725 to 41,363	to
March 1, 2011	George Washington	9	60	116, 980 to 117, 191	to (now )	Second time as US collaboration; subsequently listed as GA on 7 June 2011.
February 1, 2011	Nineteenth Amendment to the United States Constitution	8	103	7,480 to 21,280	to	First collaboration of 2011 reboot

This section is retained for historical purposes. Below shows the articles that were improved through the United States Collaboration of the week. (Archived Nominations)

Date	Title	Votes	Edits	Improvement	Status	Additional comments
August 14, 2007	United States	1				5th FAC June 2009
July 26, 2007	United States at the 2007 Pan American Games	1
April 6, 2007	Junior State of America	1	44
March 15, 2007	Shreveport, Louisiana	3
January 26, 2007	Muhammad Ali	6
January 11, 2007	Maine	3
December 19, 2006	Ohio River flood of 1937	6	9
October 8, 2006	North Carolina	7	417	8,044 to 9,235 words (+14%)
September 23, 2006	Mount Rushmore	2	54	2,693 to 2,954 words (+9%)		FAC April 9 2006, defeatured with little work July 2010
July 3, 2006	Arlington County, Virginia	17	195	4,198 to 4,592 words (+9%)
June 19, 2006	Statue of Liberty	21	28	4,606 to 4,631 words (+0.5%)		FAC August 2010
June 5, 2006	Native Americans in the United States	22	45	6,541 to 6,859 words (+4.9%)		unsuccessful FAC February 2006
May 22, 2006	George Washington	17	295	8,927 to 7,552 words (-15%)		Former GA, delisted June 2009.
May 8, 2006	Kentucky Derby	12	36	1,485 to 1,537 words (+3.5%)
April 24, 2006	Washington, D.C.	26	120	8,222 to 8,223 words (0%)		Peer reviewed, 2nd FAC promoted 30 July 2008
April 10, 2006	Denver, Colorado	21	68	6,021 to 6,340 words (+5.3%)
March 27, 2006	Omaha, Nebraska	20	14	3,611 to 3,842 words (+6.4%)		FAC unsuccessful December 2008
March 13, 2006	Mount Rushmore	17	98	1,334 to 2,058 words (+54%)	see above
February 27, 2006	Music of the United States	20	21	to 10,467 words (+3%)		promoted April 14, 2006
February 13, 2006	Rhode Island	22	37	4,516 to 4,425 words (-2%)		delisted GA June 2008
January 30, 2006	Transportation in New York City	24	31	4,962 to 5,298 words (+7%)		delisted GA 31 January 2010
January 16, 2006	West Virginia	11	172	3,503 words to 6,262 words (+79%)		delisted GA January 10 2009
January 2, 2006	History of New Jersey	4	166	7,358 words to 6,592 words (-10%)		Featured Article on January 30, 2006, demoted 4 September 2009
November 22, 2005	42nd Street (Manhattan)	3	0	0%
November 1, 2005	Indian reservation	3	4	+4 words