Educator After finishing her education, Keith became a principal of the Sherman School in San Francisco. In 1890, she was elected life member of the Golden Gate Kindergarten Association. During the period of 1913–14, Keith wrote a column, "The School Teachers' Page" for the
Western Journal of Education.
Writer and journalist Keith was a contributor to the daily and weekly press, as well as the amateur press from 1879. These were principally poems, such as "A Fragment". But her best work in amateur journalism was in the form of extended sketches. Her first production of this kind, entitled "Through a Thermometer", was published in pamphlet form by Philip I. Figel in 1882. A sketch written in 1886, entitled "Did She Care For Him?", also published by Figel in pamphlet form, was considered an improvement though it was not a very original love story. While in school she had already written some verses, and she continued to send occasional poems to the papers. One of these, entitled “Our Flag,” written during the
Civil War, demonstrated her strong poetical talents. She became connected with the
Alta Californian, the
Chronicle, the
Examiner, and the
Call, of San Francisco, both as a space writer and a contributor of special articles, usually without signature. Recognizing that anonymity made her known only in a limited circle, she adopted the
nom de plume of "Erie Douglas", contributing poetical charades to the puzzle columns of the weekly papers and winning prizes in contests for the best essays. She wrote poems of humor for the
Wasp, and edited the "Snap Shots" department for the
San Francisco News Letter. She became better known over another signature, "Di Vernon", contributing all over the Pacific coast and to Eastern periodicals, as her notability extended. These included ''Demorest's Monthly Magazine
, Good Housekeeping
, and others devoted to the interests of women. She wrote many short stories. Under "Di Vernon", she served as special writer for the Alta Californian
, San Francisco Chronicle
, Examiner
, News Letter
, and Call
. She was a special correspondent of the San Francisco Recorder-Union
, while also writing for the Journalist
, Kate Field's Washington
, and other periodicals. She served as associate editor of the Household Realm'' of
Cleveland,
Ohio. Keith's style was characterized as "bright and sparkling, full of satire without bitterness". Keith's works included,
Report of Historical Landmarks Committee of the Native Daughters Golden West (W. N. Brunt, 1902);
Outlines of California history (San Francisco, W. N. Brunt Press, 1916); and ''Keith's outlines in astronomy and geography'' (Donaldson publishing company, San Francisco, 1917); She was a member of and speaker at the gatherings of Pacific Coast Women's Press Association. She was also a member of the Illinois Press League.
Reformer and activist Her first published article, at the age of 13, was titled "Our Flag". The importance of a
Columbus Day celebration by school children was first urged by Keith upon the San Francisco public in her "Di Vernon" column of the
San Francisco News Letter. She also originated the idea of patriotism among school children, to be known as "The Order of the American Flag." Keith was the first teacher to introduce the salute to the American flag as a part of the regular opening exercises each day in the classroom. Eventually, the whole school joined in the exercise. This pioneer work stimulated others. In 1892, as a member of the Pacific Coast Women's Press Association, Keith scored a "journalistic triumph" for her comments published by the
Illustrated American. This was preceded with a
Fourth of July article published in the
News Letter, in 1890, in which she stated: "It is treason to haul down the flag from the masthead; it is treason to degrade it in the estimation of a child." In February, 1891, she asked: "Shall the flag of our country be debased by bearing upon its fair surface an advertising device? If there be no law to prevent it, let us have one at once." In September, 1891, she delivered an address before the Pacific Coast Women's Press Association at
Union Square Hall. The
peroration was a patriotic outburst, calling upon Congress to protect the flag from the advertising "fiend". This was published in the
Daily Report, of San Francisco, and in the
New York Journalist, giving it a widespread circulation. This address also contained an exposition of "Di Vernon's" pet project, the organization of the "Order of the American Flag," a patriotic legion, among the children of America. At other times during the last few years which preceded this, Keith (as Di Vernon) made similar appeals to arouse the patriotic sentiment. So she was surprised, after picking up a copy of the
Illustrated American in April 1892, to find a self-laudatory editorial, in which the paper congratulated itself that the crusade which it had inaugurated against the flag-advertising was about yield results. To claim the whole credit for that aroused Di Vernon's sense of justice. She wrote to the editor, asking the date of the "inauguration".
Maurice Meyer Minton, Sr. replied in a courteous note, stating that the matter was brought up in editorials of vol. 9, page 530, dated February 6, 1892. Keith (Di Vernon) found all the dates of her patriotic articles, and in the
News Letter of May 14, 1892, published a history of the whole matter, under the caption: “Honor the Flag". With characteristic directness, Di Vernon asked: "Don't you think that instead of taking the lead, you were rather late in dropping into line?" In March, 1894, she had the satisfaction of witnessing the official adoption of her patriotic idea. The
San Francisco Board of Education passed a resolution that the last hour of the last Friday of each month should be given to patriotic exercises, including the salute of the flag. Keith was especially interested in subjects pertaining to women. She served as grand president,
Native Daughters of the Golden West. She was an original member, secretary and treasurer of the Susan B. Anthony Club founded immediately after the defeat of
equal suffrage in California in 1896. She was a member of the San Francisco Society for the Prevention of Cruelty to Animals, and edited a children's column in the
Humane World, a monthly periodical published in
Saint Paul, Minnesota, focused on the prevention of cruelty to animals. She was also a supporter of the cause of
temperance. ==Personal life==