| Xenophon's Memorabilia of Socrates by Xenophon - 1890 - 265 pages |
| Xenophons Kyropädie by Xenophon, Ludwig Breitenbach - 1890 |
| Xenophons Kyropädie by Xenophon, Ludwig Breitenbach, Bernhard Büchsenschütz - 1890 |
| Xenophontis anabasis by Xenophon - 1890 - 266 pages |
| Xenophōntos Apomnēmoneumata by Xenophon, Georgios Boukouvalas - 1890 - 254 pages |
| Xenophōntos Hellēnika by Xenophon - 1890 - 427 pages |
| Xenophōntos Kyrou paideia A-[Ē] by Xenophon - 1890 |
| Xenophōntos Kyrou Paideias A'[-H'] by Xenophon, Hubert Ashton Holden - 1890 |
| Xenophōntos Kyrou paideias A'[-H'] by Xenophon - 1890 |
| Xi gu tang wen by Zongjun Tan - 1890 |
| Xi gu tang wen by Zongjun Tan - 1890 |
| Xi gu tang wen by Zongjun Tan - 1890 |
| Xi gu tang wen - 1890 |
| Xiao hui chou hui shu mu - 1890 |
| XXIV bits of vers de société - 1890 - 74 pages |
| XXIV Bits of Vers de Société - 1890 - 76 pages |
| Xxvii Ueber heintzit, ein neues borat von Leopoldshall by Otto Luedecke - 1890 - 4 pages |
| XXVII. Jahresbericht by Königliches Gymnasium in Gnesen, Otto Knoop, Julius Methner - 1890 - 45 pages |
| XXXVI lyrics and XII sonnets by Thomas Bailey Aldrich - 1890 - 93 pages |