Mellone Number	Levy Number	Thumbnail	Cachet Maker
M-21	Levy 41c		Harry Ioor
M-22			Dorothy Knapp
M-23			Koehler
M-24	Levy 41bb		Kolor Kover
M-25			James MacAdams
M-26			James MacAdams
M-27			James MacAdams
M-28			Verna Mann
M-29			Nix
M-30	Levy 41ff		Pent-Arts Beard & West

Mellone 1 to 10   Mellone 11 to 20   Mellone 21 to 30   Mellone 31 to 40   Mellone 41 to 52

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For complete information about these first day covers, including notes about the cachet designers and suggested prices, we suggest you obtain the Mellone Cachet Catalog of FDCs of the 1950s Volume I available from FDC Publishing