| Prussian-born philosopher | 25 |
| Proponent of a classless society | 32 |
| Pop singer Richard | 18 |
| Philosopher who gave his name to an -ism | 40 |
| Out-of-favor icon | 17 |
| Memorable brothers | 18 |
| Karl, Richard or Harpo | 22 |
| Karl with a manifesto | 21 |
| Karl who philosophized about class struggle | 43 |
| Karl or Zeppo | 13 |
| Karl or Harpo | 13 |
| Karl or Groucho | 15 |
| Karl or Chico | 13 |
| Karl of communism | 17 |
| His epitaph begins "Workers of all lands unite" | 57 |
| Harpo or Karl | 13 |
| Harpo or Chico | 14 |
| Harpo | 5 |
| Gummo, for one | 14 |
| Groucho or Karl | 15 |
| Groucho or Chico | 16 |
| German socialist Karl | 21 |
| German political theorist | 25 |
| Fraternal surname of comedy | 27 |
| Family name in comedy | 21 |
| Engels associate | 16 |
| Comedy's __ Brothers | 24 |
| Comedic actor Groucho | 21 |
| Collaborator with Engels | 24 |
| Class-action philosopher? | 25 |
| Chico's last name | 21 |
| Chico, Groucho, Gummo, Harpo, or Zeppo of comedy | 48 |
| Chico or Karl | 13 |
| Chico or Harpo | 14 |
| Big name in communism and comedy | 32 |
| Any of five O-ending brothers | 29 |
| Any brother in "Animal Crackers" | 42 |
| 1950s-'60s TV quiz show host | 32 |
| "Time wounds all heels" comic | 39 |
| "Time flies like an arrow. Fruit flies like a banana" speaker | 71 |
| "Those are my principles. If you don't like them I have others" speaker | 85 |
| "The rich will do anything for the poor but get off their backs" theorist | 83 |
| "The Poverty of Philosophy" author | 44 |
| "The Communist Manifesto" coauthor | 44 |
| "The Big Store" name | 30 |
| "Right Here Waiting" rocker Richard | 45 |
| "Manifesto" writer | 28 |
| "Horse Feathers" family name | 38 |
| "Go West" name | 24 |
| "Dictatorship of the proletariat" philosopher | 55 |
| "Das Kapital" writer | 30 |
| "Anyone who says he can see through women is missing a lot" quipster | 78 |
| "Animal Crackers" surname | 35 |
| "Animal Crackers" brothers | 36 |
| "A Night at the Opera" name | 37 |
| Like a classless society | 24 |
| Mother of Jesus | 15 |
| Painter Cassatt | 15 |
| Gardener of rhyme | 17 |
| Contrary girl | 13 |
| Name repeated in a nursery rhyme | 32 |
| Wells of Motown | 15 |
| Contrary lass | 13 |
| A Lincoln | 9 |
| "Quite contrary" lass | 31 |
| The Blessed Virgin | 18 |
| Pickford or Martin | 18 |
| One of two English queens | 25 |
| Mrs. Lincoln | 12 |
| Martin of Broadway fame | 23 |
| Little lamb's owner | 23 |
| Hailed one | 10 |
| Garden grower of rhyme | 22 |
| Contrary one? | 13 |
| Contrary gardener | 17 |
| "Quite contrary" girl | 31 |
| "Proud ___" (hit of 1969) | 35 |
| "Frankenstein" author Shelley | 39 |
| "227" role | 20 |
| "___ Poppins" | 23 |
| 'Quite contrary' lass | 29 |
| Woman in the Gospels | 20 |
| William's joint ruler | 25 |
| Wife of George V | 16 |
| Well-known gardener | 19 |
| The mother of James and Joseph | 30 |
| The mother | 10 |
| The "Rose of Tralee" | 30 |
| Successor to Edward VI | 22 |
| Steenburgen of ''Ragtime'' | 42 |
| Sister of Lazarus, in the Bible | 31 |
| Sister of Lazarus | 17 |
| Seven ___ Three | 15 |
| Runner Decker | 13 |
| Queen beheaded by Q.E. I | 24 |
| Poppins or Astor | 16 |
| Poppins of kiddie lit | 21 |
| Piet` figure | 12 |
| Pickford or Poppins | 19 |
| Pickford or Astor | 17 |