Amsterdam, The Netherlands
| 1836 | J. B. Wolters founds the Schoolbook Publishing Company in Groningen. |
| 1858 | P. Noordhoff establishes Noordhoff publishing house. |
| 1886 | Nicolaas Samson leaves civil service to run his publishing business full time. |
| 1891 | Ebele E. Kluwer publishes his first textbook. |
| 1920 | Kluwer expands to Jakarta, Indonesia, to provide books for the Dutch-speaking populace there. |
| 1954 | Republic of Indonesia prohibits importation of Indonesia language books. |
| 1959 | Indonesia nationalizes J.B. Wolters-Djarkata |
| 1968 | Schoolbook (now known as J. B. Wolters) merges with Noordhoff to add educational and vocational titles. |
| 1970 | Samson publishing merges with A.W. Sijthoff to form Information and Communications Union (ICU). |
| 1972 | Wolters-Noordhoff merges with the ICJ, which publishes periodicals and books for the administrative market, and takes its name |
| 1983 | ICU changes its name to Wolters-Samson. |
| 1987 | Kluwer merges with Wolters-Samson to fend off hostile take over bid by Elsevier; the new entity is called Wolters Kluwer. |
| 1989 | Wolters Kluwer sells Bert Bakker and Martinus Nijhoff International |
| 1989 | Wolters Kluwer purchases IPSOA Editore of Italy, Kieser Verlag of Germany, Technipublicaciones of Spain and Tele Consulte of France. |
| 1990 | Wolters Kluwer purchases J.B. Lippincott and Company from HarperCollins for in excess of $250 million. Medical publications go to Raven Press. Legal publications go to Aspen. |
| 1995 | Lippincott and Raven Press merged to form Lippincott-Raven Publishers |
| 1996 | Wolters Kluwer purchases tax and business materials publisher CCH, Inc., for $1.9 billion. |
| 1996 | Wolters Kluwer purchases Little, Brown medical and legal division |
| 1997 | Wolters Kluwer purchases two divisions of the West Groups Information American unit and rolls them into CCH. |
| 1998 | Kluwer purchases Wiley Law Publications division from John Wiley and Sons for $26 million. |
| 1998 | Elsevier tries again to take over Wolters Kluwer, but the merger is foiled by divestments required to secure regulatory approval. |
| 1998 | Wolters Kluwer purchases Ovid Technologies for $200 million. |
| 1998 | Wolters Kluwer purchases Plenum Publishing. |
| 1998 | Wolters Kluwer purchases Waverly, Inc., for $375 million |
| 1999 | Wolters Kluwer purchases the Bureau of Business Practices from Pearson for $16 million. |
| 2000 | Wolters Kluwer acquires LoisLaw.com for $95 million to be made a part of Aspen Publishing. |
| 2001 | Wolters Kluwer purchases SilverPlatter Information, Inc., price not announced. |
| 2001 | Wolters Kluwer acquires Compliance International, Inc., and will be joined with legal publisher CCH. |
| 2002 | Wolters Kluwer sells Aspen Publishing Unit to Jones and Bartlett Publishers. |
| 2002 | Wolters Kluwer acquires Charles D. Spencer & Associates, a provider of business information. It will be included in the Aspen imprint at Wolters-Kluwer. Price was not announced. |
| 2002 | Wolter Kluwer acquires ABG Professional Information for 43.5 million pounds and will include it in CCH. Later National Media Technologies was acquired also for CCH. |
| 2003 | Wolters Kluwer sells Kluwer Academic Publishing to Candover and Cinven for $591 million, retains some stock interest in the company. The sale will be finalized in January, 2004. |