These stamps and covers came from three estate collection auctions in the Washington, DC and from my mother's collection from Texas and Virginia in the 1950s and working on Capitol Hill in the 1970s. Please bear with me as I am not an expert and there could be some mistakes. I am not able to ship outside the US. Thanks for looking. 

Included:

Washington

• About 180 Washington 2 cent stamps. Notes: around 13 bent, 2 pairs, 1 stamped Clerk 56, 1 stamped I.R., 2 Philadelphia postmark, 1 1955 postmark, 8 Earn Army cancels, two stamped Boston MA
• 1895 2 cent red #267
• Three 2 Cent Overprint 6 Cents Air Mail Stationery Cover
• 1932 3 Cent Purple
• Two 5 Cent 1962 cancelled on paper
• 1789-1797 George Washington 1 Cent Stamp
• George Washington 1 cent with an Adams 2 cent cancelled 1952
• George Washington 1 Cent Stamp 1938-1943 green cancelled on paper
• #720 3 cent by Gilbert Stuart 1932; set of two cancelled 1938
• 23 cent Washington 2002 Reissue Scott #3617
• Two #U534 3 cent Washington purple embossed envelope

Jefferson

Scott #807 Thomas Jefferson 3 cent 1938 Plate # 22362 SHEET 100 stamps MNH

30 Cancelled Jefferson 3 cent stamps: 

• 14 West Texas 1952
• 1 West Texas 1953
• 5 Maryland 1953
• 1 Maryland 1953
• 1 Washington DC 1952
• 3 Virginia 1952   
• 2 Virginia 1953
• 3 Texas I can't make out

Pair of Jefferson 1 cent stamps (bubble wrap on back of enveloped section)

3 Jefferson Preprinted 1 Cent from postcards 1952, two with 1 cent Washington stamps

Lincoln

• 1938 Cover Presidential "Prexie" Series #821, 16 cent stamp
• Lincoln Cover 2014 Springfield, IL, 21 cent stamp

McKinley

• Scott #639 McKinley Plate Block of 4 7 cents MNH
• Pair of 25 Cent 1938 #829 cancelled, 1897-1901
• Liberia 41c McKinley

Taft

• 1938 Washington, DC William Howard Taft First Day Cover 
• Block of 4 Taft 4 cent Scott #685 MNH 1930

Harding Block of 4 Warren Harding 1 1/2 cent stamps MNH 1930-31; single cancelled 1946 NY

Arthur 1938 Washington, DC Chester A. Arthur First Day Cover 

Eisenhower

• Block of 4 Scott #1393 Eisenhower 6 cent 1970 glued uncancelled
• 1971 cover 8 cent Eisenhower Booklet Pane
• 1970 #1393 6 cents 1970 block of 4, 32845
• Seven 6 cent stamps cancelled on paper, plus a loose cancelled

Franklin Roosevelt 1 cent #930 green unused

Garfield Block of 4 Garfield 6 Cents #638 1927 MNH 

Harrison

• Scott #308 13 cent purple black Harrison regular issue of 1902-03
• Liberia 6c Harrison

Adams 2 cent stamp

Multiple

• Guinea US presidents cover
• T. Roosevelt / Jackson / Tyler 3 Presidential "Prexie" Series 1938 stamps on one envelope section uncancelled: Scott #830 30c Theodore Roosevelt, Scott #812 7 cent Andrew Jackson and Scott #815 10c John Tyler
• Flag over Mount Rushmore 29 cents #2523b