Ако се не варам, неки арапски, или византијски "писац" је описао Јужне Словене као крупне људе "русе" косе. Ово "русе косе" се може протумачити као риђе, али лако може и означавати једноставно човека са светлом/светлијом косом.
Искрено, не верујем да су се Јужни Словени превише разликовали од њихових северних рођака.
Такође, делује да је овај Американац мислио на Јужне Словене, не за Словене генерално, пошто су плаве очи честе код северних Словена.
А и Тесла није имао плаве очи мислим.
Овде се може видети његов лични опис (молба за издавање пасоша)
http://www.poreklo.rs/forum/index.php?topic=318.20
1. Име и презиме: Никола Тесла
2. Статус: неожењен
3. Занимање: телефонски приправник
4. Година рођења: 1856.
5. Да ли је писмен или не: писмен
6. Куда путује: Француску, Русију и Немачку
7. На које време: на три године
8. Стас: велик
9. Лице: подуго
10. Коса: црна
11. Очи: црне
12. Уста: сразмерна
13. Нос: шиљаст
14. Особите биљеге: нема
15. Пребива: Госпићу, кбр. 244
16. Надлежан: Госпић
17. Поджупанија, односно округ: Госпић
18. Вера: грчкоисточна
Била је ту и оригинал слика, али је у међувремену укљоњена са блицовог сајта
Ево тог описа Тесле:
"Arthur Brisbane, a newspaper editor for the New York World, described Tesla's appearance:
Nikola Tesla is almost the tallest, almost the thinnest and certainly the most serious man who goes to Delmonico's regularly ... He has eyes set very far back in his head. They are rather light.
I asked him how he could have such light eyes and be a Slav. He told me that his eyes were once much darker, but that using his mind a great deal had made them many shades lighter. I have often heard it said that using the brain makes the eyes lighter in color. Tesla's confirmation of the theory through his personal experience is important.
He is very thin, is more than six feet tall and weighs less than a hundred and forty pounds. He has very big hands. Many able men do—Lincoln is one instance. His thumbs are remarkably big, even for such big hands. They are extraordinarily big. This is a good sign. The thumb is the intellectual part of the hand. The apes have very small thumbs. Study them and you will notice this.
Nikola Tesla has a head that spreads out at the top like a fan. His head is shaped like a wedge. His chin is as pointed as an ice-pick. His mouth is too small. His chin, though not weak, is not strong enough. His face cannot be studied and judged like the faces of other men, for he is not a worker in practical fields. He lives his life up in the top of his head, where ideas are born, and up there he has plenty of room. His hair is jet black and curly. He stoops—most men do when they have no peacock blood in them. He lives inside of himself. He takes a profound interest in his own work. He has that supply of self-love and self-confidence which usually goes with success. And he differs from most of the men who are written and talked about in the fact that he has something to tell."