Istanbul, Turkey
- Alternate Place Name
- Constantinople
- City/Town/Village Name
- Istanbul
- Country Name
- Turkey
- Letter from William Henry Seward to Frances Miller Seward, September 30, 1859
- Letter from Anna Wharton Seward to Frances Miller Seward, March 17, 1861
- Letter from William Henry Seward to Frederick William Seward, September 16, 1868
- Letter from William Henry Seward to William Henry Seward, Jr., February 21, 1871
- Letter from Augustus Henry Seward to William Henry Seward, April 11, 1871
- Letter from William Henry Seward to Frances Miller Seward, September 3, 1859
- Letter from William Henry Seward to Frances Adeline Seward, September 10, 1859
- Letter from William Henry Seward to Frances Miller Seward, September 14, 1859
- Letter from William Henry Seward to Frederick William Seward, March 10, 1871
- Letter from Augustus Henry Seward to William Henry Seward, March 10, 1871
- Letter from William Henry Seward to Frederick William Seward, April 19, 1871
- Letter from Augustus Henry Seward to William Henry Seward, May 1, 1871
- Letter from William Henry Seward to Frederick William Seward, May 4, 1871
- Letter from William Henry Seward to William Henry Seward, Jr., June 1, 1871
- Letter from William Henry Seward to Frederick William Seward, June 7, 1871
- Letter from William Henry Seward to William Henry Seward, Jr., June 28, 1871