Question: What to Autograph Collector Magazine and Linux Journal have in common?

Context paragraphs:
Erkki Rapo: Erkki Rapo (July 2, 1946 – February 28, 2004), also known as "Uncle Eki" and to international celebrities as "Eric", was a Finnish amateur autograph collector.  He dedicated the last 40 years of his life to his hobby, and is among its best-known practitioners worldwide.

Autograph Collector Magazine: Autograph Collector Magazine is a U.S. magazine for autograph collectors.  The magazine was started in 1986.  They offer news, celebrity interviews and addresses, in-person signing event listings, counterfeit-detection articles, and in-depth articles on collecting autographs from people in various professions, from sports to Hollywood to business and more.  The magazine is now a web-only publication.  The print version was published on a monthly basis.

Elaine Madlener: Elaine Madlener (née Wetmore, born 1912) was a manuscript and autograph collector and philanthropist who aided in the development of the National Autograph Collectors Society and the Newberry Library Associates.  After graduating from Columbia University, she married Otto Madlener and had two children, Richard and William.  Her work as an autograph collector was widely advanced through the Autograph Collectors Society, and she published a paper entitled “Contemporary Authors View the Autograph Collector.”  Additionally, she contributed to the Autograph Collectors Journal and the Antiquarian Bookman.  Madlener, a New York native, spent most of her life in Chicago, and died in Brunswick, Georgia in 1989.

Grace (plotting tool): Grace is a free WYSIWYG 2D graph plotting tool, for Unix-like operating systems.  The package name stands for "GRaphing, Advanced Computation and Exploration of data."  Grace uses the X Window System and Motif for its GUI.  It has been ported to VMS, OS/2, and Windows 9*/NT/2000/XP (on Cygwin).  In 1996, Linux Journal described Xmgr (an early name for Grace) as one of the two most prominent graphing packages for Linux.

XBill: XBill is an arcade style game for the X Window System.  The game features a bespectacled character known as "Bill".  The goal is to prevent Bill's legions of clones from installing "Wingdows", a virus "cleverly designed to resemble a popular operating system", on a variety of computers running other operating systems.  It was very popular among Linux gamers at the end of the 1990s, beating out "Quake", though not Quake II, as Linux Journal reader's favourite Linux game in 1999.

Matt Welsh (computer scientist): Matthew David "Matt" Welsh is a computer scientist and software engineer at Google.  He was the Gordon McKay Professor of Computer Science at Harvard University and author of several books about the Linux operating system, several Linux HOWTOs, the LinuxDoc format and articles in the Linux Journal.

Specialized Systems Consultants: Specialized System Consultants (SSC), is a private media company that publishes magazines and reference manuals.  SSC properties include LinuxGazette.com, ITgarage.com, the monthly international print magazine "Linux Journal", and the webzine "Tux Magazine".

Linux Journal: Linux Journal is a monthly technology magazine published by Belltown Media, Inc. (Houston, Texas).  It focuses specifically on Linux, allowing the content to be a highly specialized source of information for open source enthusiasts.

Workspot: Workspot was the first Linux desktop Web Service, i.e. it provided Open Source personal computing without computer ownership.  Founded by Greg Bryant, Gal Cohen, Kathy Giori, Curt Brune, Benny Soetarman, Bruce Robertson, and Asao Kamei, in 1999, it was the first application service to make use of Virtual Network Computing.  Workspot also hosted a free Linux Desktop demo using VNC: 'one-click to Linux' It eventually began to charge for a remote, web-accessible, persistent desktop, and several desktop collaboration features.  Workspot won "Linux Journal"<nowiki>'</nowiki>s Best Web Application award for 2000.  Badly hit by the dotcom crash, it ceased activity by 2005.

Brent F. Ashworth: Brent Ferrin Ashworth (born January 8, 1949, Albany, California) is an autograph collector and dealer of U.S. historical documents, in particular those related to Mormon history.  He has assisted the Glenn Beck organization, the LDS Church History Library, Brigham Young University (BYU) Library Special Collections, the Utah Valley University (UVU) Library Special Collections, State History Division, including the Utah State Archives and other major institutions.  He has recently assisted Beck with his first three history museums, starting with "Man in the Moon" at the Grand America Hotel in Salt Lake City, over the July 4th holiday in 2013, the Fiftieth Anniversary of the Kennedy Assassination in conjunction with the Mercury One Convention at the Omni Hotel in Dallas, Texas, in November 2013, and the "Miracles and Massacres" Museum held at Beck's Mercury One Studios in October 2014.  In November 2013, Ashworth also appeared on Beck's special show on collecting, along with David Barton and Rick Harrison of Pawn Stars.  Ashworth has donated many books and other items in his collection to the LDS Church and his items have been displayed at the Crandall Historical Printing Museum in Provo, Utah.

Supporting paragraphs: Autograph Collector Magazine Linux Journal
Answer: monthly