- Blashfield, Evangeline Wilbour, Scribner's Magazine, Volume 21. "The Miniature Portrait", p. 253.
- Marquis Who's Who, Inc, John William Leonard, Albert Nelson Marquis, Who's who in America, Volume 5, Marquis Who's Who, 1909. p. 69.
- The Encyclopedia Americana: a library of universal knowledge, Volume 3, Encyclopedia Americana Corp., 1918, p. 36.
- Levy, Felice D, Obituaries on file, Volume 1, Facts on File, 1979. p. 25.
- Conrads, Margaret C., American Paintings and Sculpture at the Sterling and Francine Clark Art Institute, Hudson Hills, 1990. p. 16
- American art directory, Volume 3:
- "Search "Baer"
- Paris exposition 1900, Jury for minatures, Bronze medal for painting: pp. 9, 10
- Paris exposition 1900, Miniatues exhibited: "1. Mrs. William M. C." 2. "Friends" 3. "Sara" 4. "The Golden Hour" 5. "lady in Blue and Pink" 6. "My First-born" ... p. 16
- Secretary, American Society of Miniature Painters: p. 121.
- Levy, Florence Nightingale, American Federation of Arts, American art directory, Volume 4, R.R. Bowker., 1903.
- Search "Baer"
- Pan-American Exposition, Buffalo, 1901, Jury for miniatures: p. 167
- Pan-American Exposition, Buffalo, 1901, Bronze medal for miniatures: p. 170
- Worlds Fair St Louis 1904, Jury for miniatures: p. 249
- "Directory of Painters, Sculptors and Illustratiors", Part II—5
- Buffalo (N.Y.). Pan-American Exposition, 1901, Catalogue of the Exhibition of Fine Arts, D. Gray, 1901. p. 39