I am hunting for 2 books I recall from my childhood.  Book #1 is a
poem, with the opening line something like "In a farm, in a barnyard
just over the way lived a pony named Alfred who couldn't say neigh." 
Book #2 is a children's book that teaches about environmental
responsibility.  The message is that if everyone throws their pop cans
or popsicle sticks on the ground, "we'd soon have a pop can park."

Hello.

Book #1:
"The Pony Who Couldn't Say Neigh" (1964) by Marjory Schwalje, 8 copies
for sale at Abebooks.com:
http://dogbert.abebooks.com/servlet/SearchResults?imagefield.x=0&an=schwalje&tn=neigh&imagefield.y=0

Book #2:
"Who Wants a Pop Can Park?" published by Rand McNally (Start Right Elf
Book #8563).  Unfortunately, this book seems to be very rare.


There is one copy listed for sale from someone called ThePhoneman:
2. Who Wants a pop can Park? - Start Right Elf Book - #8563
http://oldphoneman.com/OtherAntiquesForSale.htm

There is also a copy for sale for $1.50 from a seller named Nancy on
the Veg Source Homeschooling Swap board:
"Who Wants a Pop Can Park? older soft, corner clipped otherwise good
for age, very cute pics! about keeping our parks clean, $1.50"
http://www.vegsource.com/homeschool/fsp2/messages/2694.html

------------
search strategy:
abebooks.com, title: couldn't say neigh
"pop can park"

I hope this helps.

Thanks for the quick and clear response.  You've helped me find 2
additional Christmas presents!

And how old are you. I mean when was it that you were a child ?

A search of Google Groups reveals someone else looking for a book
about Alfred. She seemed to think it was a little Golden Book and that
the title was "The Pony who Wouldn't Say Neigh!" However, I could not
find any title reference in the Library of Congress Catalog; hopefully
someone else with more time can :-)