"One Thousand Christmas Beards " by Roger Duvoisin originally published in 1955, poor Santa is annoyed by all of the imposter Santa's ... and well he should be.
'Auf der Strasse nach Weihnachten' by Regine Schindler published in 1976. Illustrated by Sita Jucker-Bruder has many wonderful versions of the cover. The illustrations in the book are all black and white ink drawings.