| Maymont FoundationEIN 54-6039788 | Arts, Culture, Humanities | VA | $5,202,382Mid-sized | 88.85 |
| Minnesota Historical SocietyEIN 41-0713907 | Arts, Culture, Humanities | MN | $60,451,270Large | 89.84 |
| Montpelier FoundationEIN 31-1620682 | Arts, Culture, Humanities | VA | $11,496,518Mid-sized | 86.75 |
| Morven Museum & GardenEIN 22-2817982 | Arts, Culture, Humanities | NJ | $1,360,354Small | 92.04 |
| Nantucket AtheneumEIN 04-2104412 | Arts, Culture, Humanities | MA | $2,737,637Small | 88.11 |
| Nantucket Historical AssociationEIN 04-6003451 | Arts, Culture, Humanities | MA | $5,456,879Mid-sized | 84.34 |
| Nashville Public Library FoundationEIN 62-1681766 | Arts, Culture, Humanities | TN | $3,316,506Small | 91.78 |
| National Archives FoundationEIN 52-1792608 | Arts, Culture, Humanities | DC | $4,613,118Mid-sized | 80.67 |
| National Sporting Library & MuseumEIN 54-6053662 | Arts, Culture, Humanities | VA | $2,059,740Small | 82.28 |
| National Trust for Historic PreservationEIN 53-0210807 | Arts, Culture, Humanities | DC | $48,392,459Large | 79.88 |
| National Yiddish Book CenterEIN 04-2708878 | Arts, Culture, Humanities | MA | $5,587,913Mid-sized | 82.91 |
| New England Historic Genealogical SocietyEIN 04-2104757 | Arts, Culture, Humanities | MA | $10,759,248Mid-sized | 87.92 |
| New York Landmarks ConservancyEIN 23-7181785 | Arts, Culture, Humanities | NY | $3,654,178Mid-sized | 77.12 |
| Newport Historical SocietyEIN 05-0264532 | Arts, Culture, Humanities | RI | $1,148,908Small | 71.32 |
| Old Dartmouth Historical Society/New Bedford Whaling MuseumEIN 04-2104805 | Arts, Culture, Humanities | MA | $4,527,585Mid-sized | 93.25 |
| Oregon Historical SocietyEIN 93-0391599 | Arts, Culture, Humanities | OR | $8,175,545Mid-sized | 90.76 |
| Partners for Sacred PlacesEIN 23-2560361 | Arts, Culture, Humanities | PA | $1,836,122Small | 78.32 |
| Preservation Alliance for Greater PhiladelphiaEIN 23-2106589 | Arts, Culture, Humanities | PA | $730,256Small | 73.70 |
| Preservation Trust of VermontEIN 03-0281195 | Arts, Culture, Humanities | VT | $2,651,411Small | 84.04 |
| Preservation VirginiaEIN 54-0568800 | Arts, Culture, Humanities | VA | $3,746,830Mid-sized | 86.84 |
| Providence Public LibraryEIN 05-0262713 | Arts, Culture, Humanities | RI | $5,987,590Mid-sized | 86.88 |
| Redwood Library & AthenaeumEIN 05-0260678 | Arts, Culture, Humanities | RI | $2,161,062Small | 75.43 |
| Rhode Island Historical SocietyEIN 05-0259110 | Arts, Culture, Humanities | RI | $2,221,741Small | 78.93 |
| Ridgefield Library AssociationEIN 06-0692378 | Arts, Culture, Humanities | CT | $3,483,126Small | 84.58 |
| Robert E. Lee Memorial AssociationEIN 54-0536105 | Arts, Culture, Humanities | VA | $3,723,205Mid-sized | 85.47 |
| Ronald Reagan Presidential FoundationEIN 77-0054631 | Arts, Culture, Humanities | CA | $23,845,811Large | 88.34 |
| San Diego History CenterEIN 95-1728991 | Arts, Culture, Humanities | CA | $2,750,444Small | 80.20 |
| Senator John Heinz History Center- Historical Society of Western PennsylvaniaEIN 25-0965391 | Arts, Culture, Humanities | PA | $11,115,252Mid-sized | 90.62 |
| Society of the CincinnatiEIN 53-0205423 | Arts, Culture, Humanities | DC | $4,196,909Mid-sized | 88.52 |
| St. Louis Public Library FoundationEIN 43-1541947 | Arts, Culture, Humanities | MO | $744,456Small | 79.60 |
| Stan Hywet Hall & GardensEIN 34-0819149 | Arts, Culture, Humanities | OH | $5,263,087Mid-sized | 73.90 |
| Statue of Liberty-Ellis Island FoundationEIN 13-3118415 | Arts, Culture, Humanities | NY | $18,817,780Large | 92.24 |
| Ten Chimneys FoundationEIN 39-1862290 | Arts, Culture, Humanities | WI | $999,353Small | 82.29 |
| Texas State Historical AssociationEIN 74-6025220 | Arts, Culture, Humanities | TX | $2,690,694Small | 79.26 |
| The Abraham Lincoln FoundationEIN 23-2822856 | Arts, Culture, Humanities | PA | $1,233,060Small | 77.53 |
| The Basilica LandmarkEIN 41-1754864 | Arts, Culture, Humanities | MN | $1,524,846Small | 80.90 |
| The Explorers ClubEIN 13-1866795 | Arts, Culture, Humanities | NY | $2,454,020Small | 82.53 |
| The Filson Historical SocietyEIN 61-0444690 | Arts, Culture, Humanities | KY | $2,690,373Small | 84.18 |
| The Free Library of PhiladelphiaEIN 52-1173474 | Arts, Culture, Humanities | PA | $39,234,948Large | 92.74 |
| The Friends of the Saint Paul Public LibraryEIN 41-6029683 | Arts, Culture, Humanities | MN | $2,988,742Small | 80.59 |
| The George Washington FoundationEIN 54-0525507 | Arts, Culture, Humanities | VA | $2,281,010Small | 75.99 |
| The HistoryMakersEIN 36-4328170 | Arts, Culture, Humanities | IL | $3,214,859Small | 90.00 |
| The Huntington Library, Art Collections, and Botanical GardensEIN 95-1644589 | Arts, Culture, Humanities | CA | $75,523,759Large | 92.00 |
| The Indianapolis Public Library FoundationEIN 23-7016089 | Arts, Culture, Humanities | IN | $3,415,801Small | 86.43 |
| The Library FoundationEIN 93-1190983 | Arts, Culture, Humanities | OR | $2,569,779Small | 95.77 |
| The Los Angeles ConservancyEIN 95-3273046 | Arts, Culture, Humanities | CA | $2,409,119Small | 91.19 |
| The Mark Twain House & MuseumEIN 06-0685118 | Arts, Culture, Humanities | CT | $3,033,651Small | 81.04 |
| The Massachusetts Historical SocietyEIN 04-2108374 | Arts, Culture, Humanities | MA | $6,102,179Mid-sized | 83.10 |
| The MountEIN 04-2666846 | Arts, Culture, Humanities | MA | $2,021,432Small | 87.85 |
| The New York Public LibraryEIN 13-1887440 | Arts, Culture, Humanities | NY | $341,319,058Large | 91.19 |
| The New-York Historical SocietyEIN 13-1624124 | Arts, Culture, Humanities | NY | $33,697,074Large | 92.75 |
| The Newberry LibraryEIN 36-2167814 | Arts, Culture, Humanities | IL | $11,662,352Mid-sized | 83.79 |
| The Richard Nixon FoundationEIN 52-1278303 | Arts, Culture, Humanities | CA | $13,772,526Large | 91.36 |
| The Royal Oak FoundationEIN 23-7349380 | Arts, Culture, Humanities | NY | $1,974,042Small | 84.85 |
| The Seattle Public Library FoundationEIN 91-1140642 | Arts, Culture, Humanities | WA | $5,750,770Mid-sized | 96.11 |
| The South Carolina Historical SocietyEIN 57-0323800 | Arts, Culture, Humanities | SC | $950,748Small | 84.84 |
| The Supreme Court Historical SocietyEIN 23-7420574 | Arts, Culture, Humanities | DC | $2,694,765Small | 82.95 |
| Thomas Jefferson FoundationEIN 54-0505959 | Arts, Culture, Humanities | VA | $31,701,531Large | 91.32 |
| Thunderbird Lodge Preservation SocietyEIN 88-0434866 | Arts, Culture, Humanities | NV | $1,411,162Small | 73.55 |
| Tulsa Library TrustEIN 51-0165881 | Arts, Culture, Humanities | OK | $9,385,003Mid-sized | 84.34 |