File 1920 .PDF and .ZIP files Box 1 Online In: John Harvey Kellogg Papers, 1832-1965 (majority within 1874-1943) » Correspondence
File 1921 .PDF and .ZIP files Box 1 Online In: John Harvey Kellogg Papers, 1832-1965 (majority within 1874-1943) » Correspondence
File 1922-1923 .PDF and .ZIP files Box 1 Online In: John Harvey Kellogg Papers, 1832-1965 (majority within 1874-1943) » Correspondence
File 1924-1925 .PDF and .ZIP files Box 1 Online In: John Harvey Kellogg Papers, 1832-1965 (majority within 1874-1943) » Correspondence
File 1926-1929 .PDF and .ZIP files Box 1 Online In: John Harvey Kellogg Papers, 1832-1965 (majority within 1874-1943) » Correspondence
File 1930-1932 .PDF and .ZIP files Box 1 Online In: John Harvey Kellogg Papers, 1832-1965 (majority within 1874-1943) » Correspondence
File 1933-1934 .PDF and .ZIP files Box 1 Online In: John Harvey Kellogg Papers, 1832-1965 (majority within 1874-1943) » Correspondence
File January-June 1935 .PDF and .ZIP files Box 1 Online In: John Harvey Kellogg Papers, 1832-1965 (majority within 1874-1943) » Correspondence
File July-December, 1935 .PDF and .ZIP files Box 2 Online In: John Harvey Kellogg Papers, 1832-1965 (majority within 1874-1943) » Correspondence
File 1936 .PDF and .ZIP files Box 2 Online In: John Harvey Kellogg Papers, 1832-1965 (majority within 1874-1943) » Correspondence