Some context: Lucy Stone (August 13, 1818 - October 18, 1893) was a prominent U.S. orator, abolitionist, and suffragist, and a vocal advocate and organizer promoting rights for women. In 1847, Stone became the first woman from Massachusetts to earn a college degree. She spoke out for women's rights and against slavery at a time when women were discouraged and prevented from public speaking. Stone was known for using her birth name after marriage, the custom at the time being for women to take their husband's surname.
In 1887, eighteen years after the rift formed in the American women's rights movement, Stone proposed a merger of the two groups. Plans were drawn up, and, at their annual meetings, propositions were heard and voted on, then passed to the other group for evaluation. By 1890, the organizations resolved their differences and merged to form the National American Woman Suffrage Association (NAWSA). Stone was too weak with heart problems and respiratory illness to attend its first convention but was elected chair of the executive committee. Stanton was president of the new organization, but Anthony, who had the title of vice president, was its leader in practice. Starting early in January, 1891, Carrie Chapman Catt visited Stone repeatedly at Pope's Hill, for the purpose of learning from Stone about the ways of political organizing. Stone had previously met Catt at an Iowa state woman's suffrage convention in October, 1889, and had been impressed at her ambition and sense of presence, saying "Mrs. Chapman will be heard from yet in this movement." Stone mentored Catt the rest of that winter, giving her a wealth of information about lobbying techniques and fund-raising. Catt later used the teaching to good effect in leading the final drive to gain women the vote in 1920. Catt, Stone and Blackwell went together to the January, 1892 NAWSA convention in Washington, DC. Along with Isabella Beecher Hooker, Stone, Stanton and Anthony, the "triumvirate" of women's suffrage, were called away from the convention's opening hours by an unexpected woman suffrage hearing before the United States House Committee on the Judiciary. Stone told the assembled congressmen "I come before this committee with the sense which I always feel, that we are handicapped as women in what we try to do for ourselves by the single fact that we have no vote. This cheapens us. You do not care so much for us as if we had votes..." Stone argued that men should work to pass laws for equality in property rights between the sexes. Stone demanded an eradication of coverture, the folding of a wife's property into that of her husband. Stone's impromptu speech paled in comparison to Stanton's brilliant outpouring which preceded hers. Stone later published Stanton's speech in its entirety in the Woman's Journal as "Solitude of Self". Back at the NAWSA convention, Anthony was elected president, with Stanton and Stone becoming honorary presidents.
When did she visit or meet Catt?
A: Starting early in January, 1891,

Some context: A synthesizer (often abbreviated as synth, also spelled synthesiser) is an electronic musical instrument that generates electric signals that are converted to sound through instrument amplifiers and loudspeakers or headphones. Synthesizers may either imitate traditional musical instruments like piano, Hammond organ, flute, vocals; natural sounds like ocean waves, etc.; or generate novel electronic timbres. They are often played with a musical keyboard, but they can be controlled via a variety of other input devices, including music sequencers, instrument controllers, fingerboards, guitar synthesizers, wind controllers, and electronic drums. Synthesizers without built-in controllers are often called sound modules, and are controlled via USB, MIDI or CV/gate using a controller device, often a MIDI keyboard or other controller.
A ribbon controller or other violin-like user interface may be used to control synthesizer parameters. The idea dates to Leon Theremin's 1922 first concept and his 1932 Fingerboard Theremin and Keyboard Theremin, Maurice Martenot's 1928 Ondes Martenot (sliding a metal ring), Friedrich Trautwein's 1929 Trautonium (finger pressure), and was also later utilized by Robert Moog. The ribbon controller has no moving parts. Instead, a finger pressed down and moved along it creates an electrical contact at some point along a pair of thin, flexible longitudinal strips whose electric potential varies from one end to the other. Older fingerboards used a long wire pressed to a resistive plate. A ribbon controller is similar to a touchpad, but a ribbon controller only registers linear motion. Although it may be used to operate any parameter that is affected by control voltages, a ribbon controller is most commonly associated with pitch bending. Fingerboard-controlled instruments include the Trautonium (1929), Hellertion (1929) and Heliophon (1936), Electro-Theremin (Tannerin, late 1950s), Persephone (2004), and the Swarmatron (2004). A ribbon controller is used as an additional controller in the Yamaha CS-80 and CS-60, the Korg Prophecy and Korg Trinity series, the Kurzweil synthesizers, Moog synthesizers, and others. Rock musician Keith Emerson used it with the Moog modular synthesizer from 1970 onward. In the late 1980s, keyboards in the synth lab at Berklee College of Music were equipped with membrane thin ribbon style controllers that output MIDI. They functioned as MIDI managers, with their programming language printed on their surface, and as expression/performance tools. Designed by Jeff Tripp of Perfect Fretworks Co., they were known as Tripp Strips. Such ribbon controllers can serve as a main MIDI controller instead of a keyboard, as with the Continuum instrument.
What is the fingerboard controller?
A:
Fingerboard-controlled instruments include the Trautonium (1929), Hellertion (1929) and Heliophon (1936),