Ä

The letter Ä occurs as an independent letter in the Swedish, Finnish, Skolt Sami, Karelian, Estonian, Luxembourgish, North Frisian, German, Saterlandic, Emiliano-Romagnolo, Rotuman, French, Slovak, Tatar, Gagauz, and Turkmen alphabets, where it represents a vowel sound. 
https://en.wikipedia.org/wiki/%C3%84
Ä is 28th and second to last letter in the Finnish alphabet. 
https://en.wikipedia.org/wiki/Finnish_orthography

Some Finnish words with the letter ä:
äiti = mother
ämpäri = bucket
ääni = sound, voice
älämölö = vociferous protest

In the picture is a detail of asphalt worker's water tank car, which was parked near our house. It's written VETTÄ (=water) on the tank.  



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