Stone and Clay
BC - Present

European Hand Made
1846 - WW1

European Machine Made
1950's - 1960's

Transitional
Late 1800's - 1917

Akro Agate
1911 - 1951

Christensen Agate
1925 - 1933

Peltier Glass
1927 - 2002

Ravenswood
1928 - 1955

Alley Agate
1929 - 1947

Master
1930 - 1974

Vacor De Mexico
1930 - Present

Vitro Agate
1932 - 2004

Champion Agate
1938 - 2005

Kokomo
1939 - 1942

Alox
Late '30's - Late '40's

Playrite
1940 - 1947

Jackson
1945 - 1946

Cairo
1946-1952

Heaton Agate
1946 - 1971

Davis Marble
1947 - 1948

Marble King
1949 - Present

C.E. Bogard & Sons
1971 - 1986

Mid-Atlantic of WV
1990 - 2004

JABO, Inc. Classics
1992 - 2012

JABO, Inc. Contract
runs 2008 - 2012

JABO, Inc. Misc.
1991 - 2012

JABO, Inc. Post-McCullough
2012 - 2019

Sammy's Mountain Marbles
2012 - Present

Dave's Appalachian Swirls
2014 - Present

New London Glassworks
2022 - Present

Contemporary Handmade
1960's - Present

Asian Imports
1950's - Present

Modern Clay, Stone, etc.
1980's - Present

Other, unique, odd...