Dear OGF colleagues, friends, and compatriots, Plans are now final for a “25 Years of Grid Computing” celebration at Supercomputing 2023 to mark a quarter-century since the historical SC'98 Grid Birds of a Feather session that condensed, focused, advanced, and materialized a lot of thinking that then led to the launch of many grid computing organizations across the succeeding years. Most of these organizations are still with us and doing good work, and while the landscape and range of distributed computing methods have changed substantially over the years, credit is still due to the pioneers who led a substantial sea change in the field by discussing and implementing these methods. We thought that a party would be a good way to celebrate this. To do this in a focused way and still give people a chance to socialize with others in the broader community at the same time, we’ve teamed up with the annual Beowulf Bash and gotten a special room at the venue where we can go to find each other for discussion while having access also to the rest of the event. OGF is an official sponsor of this event. The Bash is about a 20-minute walk away from the convention center, but as it says in the announcement below, we and other Beowulf Bash sponsors will be providing Uber vouchers through SC'23 exhibition booths where you can stop by to collect them. For a complete list of sponsors, see the event web site at https://beowulfbash.com and the information below, and let us know if you have any questions. https://www.linkedin.com/events/25yearsofgridcomputing7125029003001790466/ While some important people cannot make it, we expect other 25 year anniversaries over the next few years that will give equal opportunities for celebration. These include the 25th anniversary of the creation of the Grid Forum in June 2024, as well as those of the European Data Grid, the Open Science Grid, the Asia-Pacific Grid, the IGFT and its various PMAs over the subsequent years, and a large number of virtual organizations, consortiums, and collaboratives. Speaking personally for those who have continued to work to keep the OGF history, web sites, and products available and introduce new methods for those who want to keep working in this area, this effort is still ongoing, and I encourage you to check out https://ogf.org and the corresponding sites linked from there. There are many new tools and methods, including improvements in online authoring tools, GitHub organizational pages, and we expect to be making announcements of some substantial new opportunities in the standardization area in the near future. There are still opportunities for new work and efforts in areas where our particular open methods of working to produce documentation of standards and best practices make sense. We would also like to see OGF make some progress in software publishing in addition to documents. Meanwhile, we hope you will take some time wherever you are to raise a hearty toast in memory of this milestone, and hope to see those of you in Denver in person who can make it. Look for the OGF banner or ask any of the organizers or greeters there on arrival. And thanks to those who helped put this together in the grid25-bof list. Alan (For the GFSG and event organizers) Alan Sill, Ph.D Managing Director, High Performance Computing Center Adjunct Professor of Physics and Astronomy Texas Tech University Drane 159, MS 4-1167 http://www.hpcc.ttu.edu Co-Director, NSF Center for Cloud and Autonomic Computing https://nsfcac.org President, Open Grid Forum https://www.ogf.org e-mail: Alan.Sill@ttu.edu ph. 806-834-5940