The Bobbsey Twins collectors guide
Formats
MershonCP
Who'sWhoedition
GrossetOmnibus
boardgamespuzzles
Otherauthorizededitions
bookofthemonth
SimonSchuster
Do I have a 1st Edition?
What is my book worth?
When was my book printed?
Further resources
Original artwork
Records
dolls
Hebrew
Saalfield
Spain
for links
Goldsmith
75thAnniversary
Grosset50sThisVolumeFree
Make-Believe Stories
Six Little Bunkers
G&DAbridged
Perks
Dutch printings from the Netherlands
Unfortunately I own none of these--I got both these pictures from the internet.
So I can't tell you anything about them right now =)