Buy foreclosed houses in a depressed town with a large industry. 

It's rather depressing but it's the truth.  

I have been taking the depression for it over the 34 years.

Now the last one I want to leave with may sound a bit depressing.... 

Of course, your cash flow is almost nill, but there are several great things that will happen;1) You will be able to increase the rents on 5 houses every year. the first 1 or 2 years you are depressed and think you made a huge mistake, but In a few years, after increasing rents, your will be bathing in cash. in 10 years you should be earning 5 times the cash flow you would have earned by paying cash for 1 property.2) You never get rich from purchasing and renting properties.

In addition to the fees rising over time and thus depressing both your cashflow and your total appreciation potential, you need to comb through the CCRs and the financial operating statements to make sure there are no whammies coming. 

Emotional support animals have been known to assist disabled individuals with severe depression, generalized anxiety disorder, post-traumatic stress disorder, and many other emotional and psychiatric disabilities.If a person with a disability needs to use an assistance animal, he or she must first make the request to his or her housing provider or housing board.

Prices in this depressed area weren't proven.

The appraiser will do a narrative appraisal (usually around 85 pages) and they do a comparable market analysis which includes market rents, market trends and any external obsolescence depressing the market like wage stagnation, population growth, industries leaving or coming into a market etc... 

The second largest was during the Great Depression,  about 80 years prior.