21. Trade card for Ayer's Sarsaparilla, manufactured by J.C.Ayer & Co., Lowell, Mass., undated Creator: Ayer, J. C. (James Cook), 1819-1878 Format: Postcards/Cards; Ephemera Collection: Ephemera collection (EP001) Institution: Historic New England
22. Trade card for Dr. Grosvenor's Liveraid, location unknown, undated Format: Postcards/Cards; Ephemera Collection: Ephemera collection (EP001) Institution: Historic New England
23. Trade card for Dr. Hartshorn's Cough Balsam, E. Hartshorn & Sons, proprietors, Boston, Mass., undated Format: Postcards/Cards; Ephemera Collection: Ephemera collection (EP001) Institution: Historic New England
24. Trade card for Hood's Sarsapailla, prepared by C.I. Hood & Co., Lowell, Mass., undated Format: Postcards/Cards; Ephemera Collection: Ephemera collection (EP001) Institution: Historic New England
25. Trade card for Hood's Sarsaparilla, C.I. Hood & Co., apothecaries, Lowell, Mass., undated Creator: Ayer, J. C. (James Cook), 1819-1878 Format: Postcards/Cards; Ephemera Collection: Ephemera collection (EP001) Institution: Historic New England
26. Trade card for Hood's Sarsaparilla, C.I. Hood & Co., apothecaries, Lowell, Mass., undated Format: Postcards/Cards; Ephemera Collection: Ephemera collection (EP001) Institution: Historic New England
27. Trade card for Hood's Sarsaparilla, C.I. Hood & Co., Lowell, Mass., undated Format: Postcards/Cards; Ephemera Collection: Ephemera collection (EP001) Institution: Historic New England
28. Trade card for Hood's Sarsaparilla, C.I. Hood & Co., Lowell, Mass., undated Format: Postcards/Cards; Ephemera Collection: Ephemera collection (EP001) Institution: Historic New England
29. Trade card for Hood's Sarsaparilla, C.I. Hood & Co., Lowell, Mass., undated Format: Postcards/Cards; Ephemera Collection: Ephemera collection (EP001) Institution: Historic New England
30. Trade card for Horsfords Acid Phosphate, Rumford Chemical Works, 58, 59, & 60 South Water Street, Providence, Rhode Island, undated Format: Postcards/Cards; Ephemera Collection: Ephemera collection (EP001) Institution: Historic New England
31. Trade card for Horsfords Acid Phosphate, Rumford Chemical Works, 58, 59, & 60 South Water Street, Providence, Rhode Island, undated Format: Postcards/Cards; Ephemera Collection: Ephemera collection (EP001) Institution: Historic New England
32. Trade card for Horsfords Acid Phosphate, Rumford Chemical Works, 58, 59, & 60 South Water Street, Providence, Rhode Island, undated Creator: Rumford Chemical Works Format: Postcards/Cards; Ephemera Collection: Ephemera collection (EP001) Institution: Historic New England
33. Trade card for Horsfords Acid Phosphate, Rumford Chemical Works, 58, 59, & 60 South Water Street, Providence, Rhode Island, undated Creator: Rumford Chemical Works Format: Postcards/Cards; Ephemera Collection: Ephemera collection (EP001) Institution: Historic New England
34. Trade card for Horsfords Acid Phosphate, Rumford Chemical Works, 58, 59, & 60 South Water Street, Providence, Rhode Island, undated Format: Postcards/Cards; Ephemera Collection: Ephemera collection (EP001) Institution: Historic New England
35. Trade card for Horsford's Acid Phosphate, Rumford Chemical Works, 58, 59, & 60 South Water Street, Providence, Rhode Island, undated Creator: Rumford Chemical Works Format: Postcards/Cards; Ephemera Collection: Ephemera collection (EP001) Institution: Historic New England
36. Trade card for Horsford's Acid Phosphate, Rumford Chemical Works, 58, 59, & 60 South Water Street, Providence, Rhode Island, undated Creator: Rumford Chemical Works Format: Postcards/Cards; Ephemera Collection: Ephemera collection (EP001) Institution: Historic New England
37. Trade card for Perry Davis' Vegetable Pain Killer, Perry Davis & Son, Providence, Rhode Island, undated Format: Postcards/Cards; Ephemera Collection: Ephemera collection (EP001) Institution: Historic New England
38. Trade card for Sampson's Secret and Frothingham's Mandrake Pills, Frothingham & Underhill, Washington Square Drug Store, location unknown, undated Format: Postcards/Cards; Ephemera Collection: Ephemera collection (EP001) Institution: Historic New England
39. Trade card for Burdock Blood Bitters, Foster, Milburn & Co., Buffalo, New York, undated Format: Postcards/Cards; Ephemera Collection: Ephemera collection (EP001) Institution: Historic New England
40. Circular for The Ayer Line of Family Medicines, Dr. J.C. Ayer & Co., Lowell, Mass., undated Creator: Ayer, J. C. (James Cook), 1819-1878 Format: Ephemera Collection: Ephemera collection (EP001) Institution: Historic New England